Weekly Update from the Open Journal of Astrophysics – 20/06/2025

Yesterday (Thursday 19th June 2025) was a national holiday in the USA, which means that no new papers were announced on arXiv today (Friday 20th June). I have therefore decided to bring forwarded the usual weekly update of papers published at the Open Journal of Astrophysics by a day. Since the last update we have published three new papers, which brings the number in Volume 8 (2025) up to 74, and the total so far published by OJAp  is now up to 309.

The three papers published this week, with their overlays, are as follows. All three were published on Tuesday, June 17th 2025. You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is “Illuminating the Physics of Dark Energy with the Discovery Simulations” by Gillian D. Beltz-Mohrmann (Argonne National Laboratory, USA) and 12 others based in the USA and Spain. This describes new high-resolution cosmological simulations providing a testbed for alternative cosmological probes that may offer additional constraining power beyond Baryon Accoustic Oscillations. It is filed in the folder marked Cosmology and NonGalactic Astrophysics.

The overlay is here:

You can read the final accepted version on arXiv here.

The second paper is in the folder marked Astrophysics of Galaxies. It is “LIGHTS. The extended point spread functions of the LIGHTS survey at the LBT” by Nafise Sedighi (Instituto de Astrofísica de Canarias, Spain) and 15 others based in Spain, USA, Iran, Italy and the UK. It describes the procedure used to construct the extended Point Spread Functions (PSFs) of the LIGHTS survey in images taken with the Large Binocular Cameras (LBCs) of the Large Binocular Telescope (LBT).

The overlay is here:

You can find the officially-accepted version of the paper on arXiv here.

Finally this week we have “Fast radio bursts as a probe of gravity on cosmological scales” by Dennis Neumann (Leiden University, Netherlands), Robert Reischke (Universität Bonn, Germany), Steffen Hagstotz (Ludwig-Maximilians Universität München, Germany) and Hendrik Hildebrandt (Ruhr University Bochum, Germany). This is about using dispersion measures derived from Fast Radio Bursts (FRBs) in combination with cosmic shear to investigate modified gravity theories, specifically Horndeski gravity. It is in the folder marked Cosmology and NonGalactic Astrophysics.

The overlay is here:

You can find the officially-accepted version on arXiv here.

That’s all the papers for this week. I’ll revert to the usual schedule for updates next week, and post the next one on Saturday 28th June.

#arXiv240911163v3 #arXiv241020190v2 #arXiv250305947v2 #AstrophysicsOfGalaxies #cosmicShear #Cosmology #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccessPublishing #DiscoverySimulations #fastRadioBursts #HorndeskiGravity #LargeBinocularTelescope #LIGHTSSurvey #OpenJournalOfAstrophysics #PointSpreadFunction #TheOpenJournalOfAstrophysics

Weekly Update from the Open Journal of Astrophysics – 14/06/2025

It’s Saturday so once again it’s time for the weekly update of papers published at the Open Journal of Astrophysics. Since the last update we have published two new papers, which brings the number in Volume 8 (2025) up to 71, and the total so far published by OJAp  is now up to 306.

The two papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is “Analysis of optical spectroscopy and photometry of the type I X-ray bursting system UW CrB2” by Mark Kennedy (University College Cork, Ireland) and 21 others based in Ireland, UK, USA, Finland, Netherlands and Australia. This one was published on Tuesday June 10th in the folder High-Energy Astrophysical Phenomena.  This describes optical photometry and spectroscopy of the low-mass X-ray binary UW Coronae Borealis taken over 2 years

The overlay is here:

You can read the final accepted version on arXiv here.

The second paper is “The Impact of Feedback-driven Outflows on Bar Formation” by Martin D. Weinberg (University of Massachusetts, Amherst, USA). This paper uses a generalization of the Hamiltonian Mean-Field model to of the disruption of bar formation in galaxies by stellar feedback. It was published on Friday 13th June 2025 in the folder marked Astrophysics of Galaxies.

The overlay is here:

You can find the officially-accepted version of the paper on arXiv here.

That’s all the papers for this week. I’ll post another update next weekend.

#arXiv240312138v2 #arXiv240806404v2 #Astrophysics #AstrophysicsOfGalaxies #BarFormationInGalaxies #DiamondOpenAccess #HighEnergyAstrophysicalPhenomena #lowMassXRayBinary #OpenAccessPublishing #OpenJournalOfAstrophysics #StellarFeedback #TheOpenJournalOfAstrophysics #UWCoronaeBorealis

Weekly Update from the Open Journal of Astrophysics – 07/06/2025

It’s Saturday so once again it’s time for the weekly update of papers published at the Open Journal of Astrophysics. Since the last update we have published two new papers, which brings the number in Volume 8 (2025) up to 69 and the total so far published by OJAp  is now up to 304.

The two papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is “Chemical Abundances in the Leiptr Stellar Stream: A Disrupted Ultra-faint Dwarf Galaxy?” by Kaia R. Atzberger (Ohio State University) and 13 others based in the USA, Germany, the UK, Sweden, Australia, Canada and Brazil. This one was published on 2nd June 2025 and is in the folder marked Astrophysics of Galaxies. It presents a spectroscopic study of stars in a stellar stream suggesting that the stream originated by the accretion of a dwarf galaxy by the Milky Way.

The overlay is here:

You can read the final accepted version on arXiv here.

The second paper is “Scaling Laws for Emulation of Stellar Spectra” by Tomasz Różański (Australian Nastional University) and Yuan-Sen Ting (Ohio State University, USA). This was published yesterday, i.e. on 6th June 2025, and is in the folder Instrumentation and Methods for Astrophysics. The paper discusses certain scaling models and their use to achieve optimal performance for neural network emulators in the inference of stellar parameters and element abundances from spectroscopic data.

The overlay is here:

You can find the officially-accepted version of the paper on arXiv here.

That’s the papers for this week. I’ll post another update next weekend.

As a postscript I have a small announcement about our social media. Owing to the imminent demise of Astrodon, we have moved the Mastodon profile of the Open Journal of Astrophysics to a new instance, Fediscience. You can find us here. The old profile currently redirects to the new one, but you might want to update your links as the old server will eventually go offline.

#arXiv241017312v2 #arXiv250318617v2 #AstrophysicsOfGalaxies #DiamondOpenAcccess #InstrumentationAndMethodsForAstrophysics #MilkyWay #neuralNetworks #OpenJournalOfAstrophysics #spectroscopy #stellarSpectra #StellarStreams #TheOpenJournalOfAstrophysics

Funding Diamond Open Access

In case you weren’t aware, SciPost is a publishing infrastructure that provides Diamond Open Access to scientific papers. That means they are free to publish and free to read. They are funded by a consortium but are now struggling financially. They have recently circulated an open letter to the Community explaining their predicament and asking for help. I encourage you to read it and, if you can, to make a donation (or bully your institution to do so).

The open letter explains that SciPost is currently running at an average cost per paper of €500. That is much less than a typical APC for a mainstream journal but it is not a negligible cost. At the rate at which SciPost is publishing it amounts to about €1000 per day. SciPost currently attracts a significant level of sponsorship but it is not enough to support its current level of activity. Information on how to help SciPost can be found here. It is a worthy cause and deserves to be supported.

One area in which SciPost has not really taken of is Astronomy, where it has published very few papers. This may at be at least partly because of the Open Journal of Astrophysics (OJAp) which is also Diamond Open Access but runs in a very different and much cheaper way. A full breakdown of costs at OJAp is given here our annual running costs are about €5000 per year, which works out at less than €50 per paper (on average); that comprises a fixed component and a marginal cost of €10 per paper.

The main reasons for the large difference in running costs are: (i) SciPost maintains and runs its own platform; and (ii) it offers a copy-editing service. OJAp piggy-backs on arXiv (where most astrophysics research papers are found anyway) and expects authors to provide the final version of their own work. Neither organization pays referees or Editors. To enable it to run, SciPost employs about three staff full-time (2.9 FTE to be precise); OJAp has no employees and we keep our costs down by offering a ‘no-frills’ service. Instead of having a wide range of sponsors, we are entirely funded by Maynooth University. I am very grateful for that support, but we are run on a shoestring budget.

I have written before about what I think the future of Diamond Open Access could be like. I would like to see a range of Diamond Open Access journals offering a choice for authors and serving different sub-disciplines. Most universities nowadays have publishing operations so there could be network of federated journals, some based on arXiv and some based on other repositories and others with different models, such as SciPost. Perhaps institutions are worried about the expense but, as we have shown the actual cost, is far less than they are wasting on Article Processing Charges.

I don’t see other Diamond Open Access journals as competitors, but as allies with community-led ecosystem. I’d be more than happy to discuss how to start up such a journal on the OJAp model with anyone interested, and have already done so with some interested parties. As far as I’m concerned, the more the merrier! It is neither fair nor reasonable, however, that the expense of running a journal that serves the global astrophysics community should fall entirely on one small University in Ireland.

By all means support SciPost (and get your institutions to do likewise), but please also consider supporting OJAp. We are currently covering our costs but have no funds to make enhancements (such as a much-needed new LaTex template). If you can afford to make a donation to SciPost, then perhaps you can afford to make a donation to OJAp proportionate to our lower running costs? For example, if you give €10K to SciPost, could you give us €1K too? That amount would keep SciPost running for a day and OJAp for many months…

#DiamondOpenAccess #OJAp #OpenAccess #OpenJournalOfAstrophysics #SciPost #TheOpenJournalOfAstrophysics

Weekly Update from the Open Journal of Astrophysics – 31/05/2025

Once again it’s time for the weekly Saturday morning update of papers published at the Open Journal of Astrophysics. Since the last update we have published five new papers, which brings the number in Volume 8 (2025) up to 67; the total so far published by OJAp has passed the 300 mark and is now up to 302. If we keep up at the same rate for the rest of the year as we did for the first five months now completed, we will publish around 160 papers altogether in 2025.

In chronological order of publication, the five papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is “Which is the most eccentric binary known? Insights from the 2023/4 pericenter passages of Zeta Boötis and Eta Ophiuchi” by Idel Waisberg, Ygal Klein and Boaz Katz (Weizmann Institute of Science, Israel).  This is a report of interferometric observations of two very eccentric binary star systems, published on Tuesday 27th May 2025 in the folder Solar and Stellar Astrophysics. The overlay is here:

You can read the final accepted version on arXiv here.

The second paper to report is “On the full non-Gaussian Surprise statistic and the cosmological concordance between DESI, SDSS and Pantheon+” by Pedro Riba Mello & Miguel Quartin (Universidade Federal do Rio de Janeiro, Brazil), and Bjoern Malte Schaefer & Benedikt Schosser (Heidelberg, Germany). This paper is in the folder Cosmology and NonGalactic Astrophysics and was published on Tuesday 27th May 2025. The paper presents an application of the “Surprise Statistic”, based on the Kullback-Leibler divergence, as a measure of the difference between results inferred from different data sets.

The overlay is here:

You can find the officially-accepted version of the paper on arXiv here.

The third paper we published last week, and our 300th overall, is “Cosmic Ray Feedback in Massive Halos: Implications for the Distribution of Baryons” by Eliot Quataert (Princeton, USA) and Philip F. Hopkins (Caltech, USA).  This was published on Thursday 29th May in the folder Cosmology and NonGalactic Astrophysics. The paper discusses the effects of cosmic rays produced by massive black holes on the structure of the baryonic component of galaxies and how these might affect cosmological parameter estimation. The overlay is here:

You can read the officially accepted version of this paper on arXiv here.

The next one to report is “Mixing neutron star material into the jets in the common envelope jets supernova r-process scenario” by Noam Soker (Technion, Israel). This was published on Thursday 27th May in the folder High-Energy Astrophysical Phenomena; it presents a discussion of the chemical enrichment of an evolved star consequent upon its ingestion of a neutron star.

The overlay is here:

You can find the officially accepted version on arXiv here.

Last, but by no means least, for this week we have “Dark Energy Survey Year 6 Results: Synthetic-source Injection Across the Full Survey Using Balrog” by Dhayaa Anbajagane (Kavli Institute, Chicago) et al. (81 authors) on behalf of the Dark Energy Survey Collaboration. It was also  published on Thursday 27th May  2025, but in the folder Cosmology and NonGalactic Astrophysics. It is about testing the Dark Energy Survey analysis pipeline using synthetic sources.

The overlay is here:

You can find the officially accepted version on arXiv here.

That’s all the papers for this week. I’ll post another update next weekend.

#arXiv240808385v2 #arXiv250105683v3 #arXiv250201753v2 #arXiv250202411v2 #arXiv250417858v2 #binaryStars #CosmologyAndNonGalacticAstrophysics #DarkEnergySurvey #DiamondOpenAccess #DiamondOpenAccessPublishing #HighEnergyAstrophysicalPhenomena #neutronStar #OpenJournalOfAstrophysics #rProcess #SolarAndStellarAstrophysics #TheOpenJournalOfAstrophysics

The 300th Publication at the Open Journal of Astrophysics

It was on October 8th last year that we published the 200th paper at the Open Journal of Astrophysics. Today, on 29th May 2025, less than 8 months later, we have reached the 300 mark with this paper:

The authors are Eliot Quataert (Princeton, USA) and Philip F. Hopkins (Caltech, USA). We continue to have a large number of papers from authors based in the USA.

I published another two papers this morning and will include all the papers published this week (Including the 300th) in the usual weekly update on Saturday. Based on the 67 papers published so far this year and the activity in the OJAp worklow, I estimate we will publish at least 150 papers this year, which means we should reach the the 400 mark early next year.

#CosmologyAndNonGalacticAstrophysics #DiamondOpenAccessPublishing #TheOpenJournalOfAstrophysics

Weekly Update from the Open Journal of Astrophysics – 24/05/205

It’s  time once again for the regular Saturday update of papers published during the past week at the Open Journal of Astrophysics. Since the last update we have published three new papers, which brings the number in Volume 8 (2025) up to 62 and the total so far published by OJAp up to 297.

In chronological order of publication, the three papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is: “Jet-shaped filamentary ejecta in common envelope evolution” by Ron Schreier, Shlomi Hillel and Noam Soker (Technion, Haifa, Israel). This paper, which was published on Monday May 19th 2025 in the folder High-Energy Astrophysical Processes, presents three-dimensional hydrodynamical simulations of common envelope evolution of a neutron star inside the envelope of a rotating red supergiant with Rayleigh-Taylor instabilities forming filamentary ejecta.

The overlay is here:

You can find the officially accepted version on arXiv here.

Second one up is “Weighing The Options: The Unseen Companion in LAMOST J2354 is Likely a Massive White Dwarf” by M. A. Tucker, A. J. Wheeler & D. M. Rowan (Ohio State University, USA) and M. E. Huber (U. Hawaii, USA). This paper was published on Tuesday 20th May 2025 in the folder for Solar and Stellar Astrophysics. It discusses a spectroscopic study of the binary system LAMOST J235456.73+335625 (J2354) with a discussion of the implications for the nature of the dark component.

The overlay is here:

You can find the officially-accepted version of the paper on arXiv here.

The third and last paper of the week, published on Thursday May 22nd 2025, also in the folder Solar and Stellar Astrophysics, is “How to use Gaia parallaxes for stars with poor astrometric fits” by Kareem El-Badry (Caltech, USA).  This paper presents a method for extracting reasonable estimates of stellar parallaxes from Gaia data when the overall astrometric solution is unreliable due to errors and noise

Here is the overlay:

You can find the officially accepted version of this paper on arXiv here.

That’s all the papers for this week. Looking at the publishing workflow, I expect we will pass the 300 mark next week. We’ll see when I post the next update next Saturday.

#arXiv240719004v2 #arXiv250109663v3 #arXiv250411528v2 #astrometry #binaryStars #commonEnvelopeEvolution #DiamondOpenAccess #GAIA #HighEnergyAstrophysicalPhenomena #hydrodynamics #LAMOSTJ2354 #LAMOSTJ23545673335625 #OpenJournalOfAstrophysics #parallax #SolarAndStellarAstrophysics #stars #TheOpenJournalOfAstrophysics #whiteDwarfs

Weekly Update from the Open Journal of Astrophysics – 17/05/2025

It’s a lovely Saturday morning in May, and it’s time for the weekly  update of papers published at the Open Journal of Astrophysics. Since the last update we have published four new papers, which brings the number in Volume 8 (2025) up to 59 and the total so far published by OJAp up to 294.

In chronological order of publication, the four papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is: “Multi-Phase Thermal Structure & The Origin of the Broad-Line Region, Torus, and Corona in Magnetically-Dominated Accretion Disks” by Philip F. Hopkins (Caltech, USA). This was published on Monday May 12th in the folder Astrophysics of Galaxies. It presents simple accretion disk model that predicts the properties of many features including the dusty torus, broad-line region, continuum emission and coronal gas.

The overlay is here:

You can find the officially accepted version on arXiv here.

Second one up is “Sparsity covariance: a source of uncertainty when estimating correlation functions with a discrete sample of observations in the sky” by Pierre Fleury (U. Montpellier, France). This one was published on Tuesday 13th May 2025 in the folder Cosmology and NonGalactic Astrophysics.  This paper presents a discussion of the uncertainty in cosmological observables caused by discrete sampling and a method to compute the covariances resulting from this.

The overlay is here:

You can find the officially-accepted version of the paper on arXiv here.

The third paper of the week, published on Wednesday May 14th 2025,  is “Dark Matter Particle Flux in a Dynamically Self-consistent Milky Way Model” by Lucijana Stanic, Mark Eberlein, Stanislav Linchakovskyy, Christopher Magnoli, Maryna Mesiura, Luca Morf, Prasenjit Saha (University of Zurich, Switzerland) and Eugene Vasiliev (University of Surrey, UK). This one presents a study of the behaviour of dark matter in an anisotropic model for the Milky Way halo with implications for particle detection rates. It is in the folder Astrophysics of Galaxies.

Here is the overlay:

You can find the officially accepted version of this paper on arXiv here.

The last paper published this week is “Too fast to be single: Tidal evolution and photometric identification of stellar and planetary companions” by Ilay Kamai and Hagai B. Perets (Technion, Haifa, Israel). This one was published on Friday 16th May 2025 in the folder Solar and Stellar Astrophysics. It presents an analysis of the rotation of stars observed in the Kepler field to identify non-single systems with high spin rates resulting from tidal effects.

Here is the overlay:

The official published version can be found on the arXiv here.

That’s all the papers for this week. I’ll post another update next week.

#accretionDisk #arXiv240700160v2 #arXiv250208805v2 #arXiv250218327v2 #arXiv250303839v2 #AstrophysicsOfGalaxies #binaryStars #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccessPublishing #magnetizedDisks #OpenJournalOfAstrophysics #SolarAndStellarAstrophysics #TheOpenJournalOfAstrophysics

Weekly Update from the Open Journal of Astrophysics – 10/05/2025

It’s time for another update Saturday morning update of activity at the Open Journal of Astrophysics. After the record-breaking stats described in the last update , this week has been on the slow side with just one paper published. This brings the number in Volume 8 (2025) up to 55 and the total so far published by OJAp up to 290.

The paper to report is “Late-time growth weakly affects the significance of high-redshift massive galaxies” by Qianran Xia & Dragan Huterer (U. Michigan, USA) and Nhat-Minh Nguyen (U. Tokyo, Japan). This paper, which was published on Wednesday 7th May 2025,  is published in the folder Cosmology and NonGalactic Astrophysics. It presents an argument that changes in the growth rate of perturbations at low redshift do not have much effect on predictions of the abundance of lassive galaxies at high redshift.

The overlay is here:

You can find the officially accepted version on arXiv here.

That’s all for now. I’ll do another update next week.

#arXiv250300155v2 #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #galaxyFormation #growthRate #OpenJournalOfAstrophysics #TheOpenJournalOfAstrophysics

Weekly Update from the Open Journal of Astrophysics – 03/05/2025

Saturday morning once again, and time for another update of papers published at the Open Journal of Astrophysics. It’s been a recording-breaking week: since the last update we have published no fewer than ten papers, which brings the number in Volume 8 (2025) up to 54 and the total so far published by OJAp up to 289.

The first paper to report is “Subspace Approximations to the Focused Transport Equation of Energetic Particles, I. The Standard Form” by B. Kippenstein & A. Shalchi (U. Manitoba, Canada). This paper, which was published on Monday 28th April 2025, presents a hybrid analytical-numerical method to solve the Fokker-Planck equation for the transport of energetic particles. It is published in the folder Solar and Stellar Astrophysics.

The overlay is here:

You can find the officially accepted version on arXiv here.

Next is “The Importance of Subtleties in the Scaling of the ‘Terminal Momentum’ For Galaxy Formation Simulations” by Philip F. Hopkins (Caltech, USA). This presents a technical discussion of issues surrounding the proper modelling of supernova blast waves and their effects in numerical simulations of galaxy formation. It was published on Tuesday 29th April 2025 in the folder Astrophysics of Galaxies. The overlay is here:

The final version can be found on arXic here.

Next one up is “Local variations of the radial metallicity gradient in a simulated NIHAO-UHD Milky Way analogue and their implications for (extra-)galactic studies” by Sven Buder (ANU, Australia), Tobias Buck (U. Heidelberg, Germany), Qian-Hui Chen (ANU) and Kathryn Grasha (ANU). This one was also published on Tuesday 29th April 2025 in the folder Astrophysics of Galaxies. It describes a numerical study of the variation of chemical abundance with radial position in galaxies and the implications of this for galaxy formation. Here is the overlay:

and you can find the final accepted version on arXiv here.

The fourth paper this week is “Zooming In On The Multi-Phase Structure of Magnetically-Dominated Quasar Disks: Radiation From Torus to ISCO Across Accretion Rates” by Philip F. Hopkins (Caltech, USA) and 14 others based in the USA and Canada. This was also published on Tuesday 29th April 2025 in the folder Astrophysics of Galaxies. It presents very detailed numerical study of the structure of magnetized quasar accretion disks. The overlay is here:

You can find the official final version on arXiv here.

Next is “Tomographic halo model of the unWISE-Blue galaxies using cross-correlations with BOSS CMASS galaxies” by Alex Krolewski, Jensen Lawrence, and Will J. Percival (U. Waterloo, Canada). This one was also published on 29th April 2025, which was a busy day(!), but in the folder Cosmology and NonGalactic Astrophysics.  This paper describes using the halo model to create mock samples unWISE-Blue galaxies, applicable to other tomographic cross-correlations between photometric samples and narrowly-binned spectroscopic samples. The overlay is here:

The final version of this one can be found on the arXiv here.

Number six for this week is “StratLearn-z: Improved photo-estimation from spectroscopic data subject to selection effects” by Chiara Moretti (SISSA, Trieste, Italy), Maximilian Autenrieth (Imperial College, UK), Riccardo Serra (SISSA), Roberto Trotta (SISSA), David A. van Dyk (Imperial) and Andrei Mesinger (SNS Pisa, Italy). This was published on Thursday 1st May 2025 in the folder Cosmology and NonGalactic Astrophysics. This one is about estimating photometric redshifts using an approach that relies on splitting the source and target datasets into strata based on estimated propensity score. The overlay is here:

The official version can be found on arXiv here.

Next is “The Impact of Galaxy-halo Size Relations on Galaxy Clustering Signals” by Joshua B. Hill and Yao-Yuan Mao (U. Utah, USA). This one was also published on May 2nd 2025 and is in the folder Astrophysics of Galaxies. It discusses the challenge of identifying a specific galaxy halo property that controls galaxy sizes through constraints from galaxy clustering alone. The overlay is here:

You can find the official version of the paper on arXiv here.

The next paper is “Detection of Thermal Emission at Millimeter Wavelengths from Low-Earth Orbit Satellites” by Allen Foster (Princeton, USA) and an international cast of 90 others, which is too many to list individually. This one was also published on Thursday May 1st but is in the folder Instrumentation and Methods for Astrophysics.  The paper discusses the experimental detection of thermal emission from satellites and a discussion of the implications for astrophysical observations, especially time-domain astronomy. The overlay is here:

You can find the final version of the paper on arXiv here.

The penultimate paper of this week is “Pseudo-Cls for spin-s fields with component-wise weighting” by David Alonso (U. Oxford, UK). This one was published yesterday (Friday 2nd May 2025).  The paper presents an approach to power spectrum estimation appropriate for data with anisotropic noise properties or for which complicated masks are required.  It can be found in the folder Cosmology and NonGalactic Astrophysics. The overlay is here:

The final version of this paper is on arXiv here.

The last paper this week is “The past, present and future of observations of externally irradiated disks” by Planet formation environments collaboration: Megan Allen (U. Sheffield, UK) and 52 others. This paper was published on Friday 2nd May in the folder Solar and Stellar Astrophysics.  It presents a review of research on the effects of the ultraviolet radiation environment on protoplanetary disc evolution and planet formation. The overlay is here:

You can find the final version on arXiv here.

That’s all the papers for this week. I’ll just add that there were quite a few gremlins at Crossref this week, particularly yesterday. I usually do the publishing first thing in the morning but yesterday’s papers were held in a queue for most of the day pending registration. Usually it just takes a few minutes, but for these I had to wait several hours but we got there in the end. Although ten papers is more than we have ever published in a week, we still haven’t had a week in which we’ve published on every working day!

Anyway, that’s all for this week. I’ll post another update next Saturday.

#arXiv240416987v2 #arXiv240920379v2 #arXiv241007077v3 #arXiv241103374v4 #arXiv241113484v2 #arXiv241201157v2 #arXiv250202744v2 #arXiv250205268v2 #arXiv250212255v3 #arXiv250410756v2 #AstrophysicsOfGalaxies #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #InstrumentationAndMethodsForAstrophysics #OpenAccessPublishing #OpenJournalOfAstrophysics #Satellites #SolarAndStellarAstrophysics #TheOpenJournalOfAstrophysics #ThermalEmission

Weekly Update from the Open Journal of Astrophysics – 26/04/2025

It’s Satuday morning once again, and time for another update of papers published at the Open Journal of Astrophysics. Since the last update we have published two papers, which brings the number in Volume 8 (2025) up to 44 and the total so far published by OJAp up to 279.

The first paper to report is “Approximating non-Gaussian Bayesian partitions with normalising flows: statistics, inference and application to cosmology” by Tobias Röspel, Adrian Schlosser & Björn Malte Schäfer (Universität Heidelberg, Germany) which was published on April 23rd 2025 in the folder Cosmology and NonGalactic Astrophysics. It is an introduction to normalizing flows – a machine learning technique for transforming distributions – and its application to the extraction of cosmological parameters from supernova data.

The overlay is here:

You can find the officially accepted version on arXiv here.

The other paper this week is “Dwarf Galaxies in the TNG50 Field: connecting their Star-formation Rates with their Environments” by Joy Bhattacharyya & Annika H.G. Peter (Ohio State University, USA) and Alexie Leauthaud (UC Santa Cruz, USA).  This one was published on 24th April 2025 in the older Astrophysics of Galaxies and it studies dwarf galaxies with properties similar to the Large and Small Magellanic Clouds that form in different environments in the TNG50 simulation of the IllustrisTNG project.

The overlay is here:

and you can find the final accepted version on arXiv here.

That’s all for this week. I’ll have another update next Saturday.

#arXiv250101946v2 #arXiv250104791v3 #AstrophysicsOfGalaxies #Cosmology #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #dwarfGalaxies #Illustris #MachineLearning #normalizingFlows #OpenJournalOfAstrophysics #TheOpenJournalOfAstrophysics

ArXiv, the Cloud and Backups

Hidden in a job advertisement on the arXiv website for software developers is the news that

arXiv is in the midst of technological modernization to ensure longevity and scalability, and to improve our ability to support the scientific community. We are currently hiring software engineers and developers to work on the arXiv CE (“Cloud Edition”) project and our tech modernization efforts.

It seems that arXiv is going to be moved from local infrastructure at Cornell University to some sort of Google Cloud Platform. I’m not sure what to make of this move. For one thing, I’m deeply suspicious of Google so I hope that measures will be taken to ensure that arXiv remains freely accessible to the global scientific community. I suspect too that Google will use arXiv submissions as it uses everything placed in its control, to train AI. On the other hand, everything on arXiv is currently in the public domain anyway, and there has been evidence of attempts by bots to scrape its content already, causing a (temporary) degradation of service.

What all this means for the Open Journal of Astrophysics, I don’t know. I have however over the past several weeks been setting up several backups of all the papers published by OJAp in various repositories. We are an arXiv-overlay journal, but there’s no reason at all why the overlay model cannot be used with other repositories.

The decision to take these precautions was not motivated by arXiv’s move to the Cloud but by more general worries about the state of affairs in the USA right now. American universities are facing a number of attacks, as the current “Government” pursues an explicitly anti-scientific agenda, so I think it’s wise to consider the risk to Cornell being non-negligible. Obviously we can’t back up the entire arXiv repository, but I think we’ve made all OJAp papers as safe as possible in the event that anything happens to arXiv. I still think it’s unlikely we will need to use them so we’ll continue with arXiv for the forseeable future. Better safe than sorry!

#arXiv #DiamondOpenAccess #GoogleCloud #TheOpenJournalOfAstrophysics

Weekly Update from the Open Journal of Astrophysics – 19/04/2025

It may be the Easter holiday weekend, but it’s still time for the weekly Saturday morning update of papers published at the Open Journal of Astrophysics. Since the last update we have published five new papers, which brings the number in Volume 8 (2025) up to 42 and the total so far published by OJAp up to 277.

In chronological order of publication, the five papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is “Galaxy Clustering with LSST: Effects of Number Count Bias from Blending” by Benjamin Levine (Stony Brook, NY), Javier Sánchez (STScI, MD), Chihway Chang (Chicago, IL) Anja von der Linden (Stony Brook), Eboni Collins (Dillard, LA), Eric Gawiser (Rutgers, NJ), Katarzyna Krzyżańska (Cornell, NY), Boris Leistedt (Imperial College, UK) on behalf of the LSST Dark Energy Science Collaboration.

This presents a simulation-based study of the effect of source overlaps (blending) on galaxy counts expected for the Vera C. Rubin Legacy Survey of Space and Time (LSST). The paper is in the folder Cosmology and NonGalactic Astrophysics and was published on Monday 14th April 2025. The overlay is here:

You can find the officially-accepted version of the paper on arXiv here.

The second paper to announce, published onTuesday 15th April 2025,  “Rapid, strongly magnetized accretion in the zero-net-vertical-flux shearing box” by Jonathan Squire (Otago, New Zealand), Eliot Quataert (Princeton, USA) & Philip F. Hopkins (Caltech, USA). This  paper presents a numerical study of turbulence in a flux shearing box, with discussion of the implications of the results for global accretion disk models and simulations thereof. It was published in the folder High-Energy Astrophysical Phenomena and the overlay is here:

You can read the officially accepted version of this paper on arXiv here.

The third paper of the week, published on Wednesday April 16th 2025,   is “DeepDISC-photoz: Deep Learning-Based Photometric Redshift Estimation for Rubin LSST” by Grant Merz (University of Illinois at Urbana-Champaign, USA) and 13 others (all based in the USA) on behalf of the LSST Dark Energy Science Collaboration. This paper describes adding photometric redshift estimation to the DeepDISC framework for classification objects in co-added images for use with the Vera C. Rubin LSST survey. It can be found in the folder Instrumentation and Methods for Astrophysics.

Here is the overlay:

You can find the officially accepted version of this paper on arXiv here.

The next one to report is “Multidimensional Nova Simulations with an Extended Buffer and Lower Initial Mixing Temperatures” by Alexander Smith Clark and Michael Zingale (Stony Brook University, NY, USA). This paper presents new computer models of classical novae with improved ability to follow nucleosynthesis in the thermonuclear outburst and better treatment of convective transport. This one was also published on Wednesday 16th April 2025 but in the folder Solar and Stellar Astrophysics.

Here is the overlay:

The official published version can be found on the arXiv here.

The last paper of the five published this week is “Measurement of the power spectrum turnover scale from the cross-correlation between CMB lensing and Quaia” by David Alonso (Oxford, UK), Oleksandr Hetmantsev (Kyiv, Ukraine), Giulio Fabbian (Cambridge, UK), Anze Slosar (Brookhaven National Laboratory, USA) and Kate Storey-Fisher (Stanford, USA). This is a discussion of using the spatial correlations of quasars and their cross-correlations with cosmic microwave background lensing data to measure a feature corresponding to the matter-radiation equality scale with consequences for cosmological parameter estimation. It was published on Thursday 17th April 2025 in the folder Cosmology and NonGalactic Astrophysics.

The overlay is here:

You can find the officially accepted version on arXiv here.

That’s all the papers for this week. I’ll just add a couple of things.

One is that, although there have been weeks before in which we have published five or more papers, we still haven’t managed to have a week on which we’ve published a paper on every weekday. This week we had two on Wednesday 16th but didn’t have any yesterday (Friday).

The second is that tt has been a while since I last posted a breakdown of the running costs here at the Open Journal of Astrophysics. Today I received an email from Scholastica, our service provider, reminding me our costs will go up shortly (from 22nd April). In the interest of transparency I am passing this information on here.

The new prices will be as follows:

• Peer Review System annual cost will be $425/year (was $350/year) plus $10 per submission (no change)
• OA Publishing Platform annual cost will be $1,499/year (was $1,399/year)

Last year we published 120 papers with about 250 submissions. We’re a bit ahead of that this year, so I estimate that our next year’s costs will be a bit less than $5000. That’s still less than the typical APC for a single paper at many journals.

I hope this clarifies the situation.

#arXiv240905467v3 #arXiv241024134v3 #arXiv241114564v2 #arXiv241118769v2 #arXiv250300595v2 #CMBLensing #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccessPublishing #fluxShearing #HighEnergyAstrophysicalPhenomena #InstrumentationAndMethodsForAstrophysics #magnetizedAccretion #Nova #OpenJournalOfAstrophysics #Quaia #quasars #SolarAndStellarAstrophysics #StellarModels #TheOpenJournalOfAstrophysics #VeraCRubinObservatory

Weekly Update from the Open Journal of Astrophysics – 12/04/2025

Time for the weekly Saturday morning update of papers published at the Open Journal of Astrophysics. Since the last update we have published four new papers, which brings the number in Volume 8 (2025) up to 37 and the total so far published by OJAp up to 272.

In chronological order of publication, the four papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is “Searching for new physics using high precision absorption spectroscopy; continuum placement uncertainties and the fine structure constant in strong gravity” by Chung-Chi Lee (Big Questions Institute (BQI), Sydney, Australia), John K. Webb (Cambridge, UK), Darren Dougan (BQI), Vladimir A. Dzuba & Victor V. Flambaum (UNSW, Australia) and Dinko Milaković (Trieste, Italy).

This presents a discussion of the problem of continuum placement in high-resolution spectroscopy, which impacts significantly on fine structure constant measurements, and a method for mitigating its effects. The paper is in the folder Solar and Stellar Astrophysics and was published on Tuesday 8th April 2025. The overlay is here:

You can find the officially-accepted version of the paper on arXiv here.

The second paper to announce, also published on 8th April 2025,  is “Deciphering Spatially Resolved Lyman-Alpha Profiles in Reionization Analogs: The Sunburst Arc at Cosmic Noon” by Erik Solhaug (Chicago, USA), Hsiao-Wen Chen (Chicago), Mandy C. Chen (Chicago),  Fakhri Zahedy (University of North Texas),  Max Gronke (MPA Garching, Germany),  Magdalena J. Hamel-Bravo (Swinburne, Australia), Matthew B. Bayliss (U. Cincinatti), Michael D. Gladders  (Chicago), Sebastián López (Universidad de Chile), Nicolás Tejos (Universidad Católica de Valparaíso, Chile).

This paper, which presents a study of the Lyman-alpha emission properties of a gravitationally-lensed galaxy at redshift z=2.37, appears in the folder Astrophysics of Galaxies. It was published

You can read the officially accepted version of this paper on arXiv here.

The third paper of the week  is “On the progenitor of the type Ia supernova remnant 0509-67.5” by Noam Soker (Technion, Haifa, Israel). This one was published on Wednesday 9th April 2025 in the folder High-Energy Astrophysical Phenomena. The author discusses possible ideas for the origin of a supernova that exploded inside a planetary nebula.

Here is the overlay:

You can find the officially accepted version of this paper on arXiv here.

Last (but certainly) not least for this week, published on April 11th 2025, we have “Are Models of Strong Gravitational Lensing by Clusters Converging or Diverging?” by Derek Perera (U. Minnesota), John H Miller Jr & Liliya L. R. Williams (U. Minnesota, USA), Jori Liesenborgs (Hasselt U., Belgium), Allison Keen (U. Minnesota), Sung Kei Li (Hong Kong University), Marceau Limousin (Aix Marseille Univ., France).  This papers study various models of a strong gravitational lensing system, the results suggesting that lens models are neither converging to nor diverging from a common solution for this system, regardless of method.

Here is the overlay:

The official published version can be found on the arXiv here.

That’s all the papers for this week. By way of a postscript I’ll just mention that the gremlins that have affected submissions to Crossref (which we rely on for registering the article metadata) have now been resolved and normal services have been restored.

#arXiv240910604v5 #arXiv241001849v2 #arXiv241105083v2 #arXiv250304709v2 #AstrophysicsOfGalaxies #CosmicNoon #DiamondOpenAccess #DiamondOpenAccessPublishing #fineStructureConstant #HighEnergyAstrophysicalPhenomena #HighResolutionSpectroscopy #PlanetaryNebula #reionization #SolarAndStellarAstrophysics #strongGravitationalLensing #SupernovaRemnant #TheOpenJournalOfAstrophysics

Weekly Update from the Open Journal of Astrophysics – 05/04/2025

It’s time once more for the regular Saturday morning update of papers published at the Open Journal of Astrophysics. Since the last update we have published one new paper. The number of articles in Volume 8 (2025) is now up to 33 and the total so far published by OJAp up to 268.

The paper concerned, published on 2nd April 2025, is “The molecular gas content throughout the low-z merger sequence” by Mark T. Sargent (ISSI, Bern), S. L. Ellison (U. Victoria, Canada), J. T. Mendel (ANU), A. Saintonge (UCL), D. Cs. Molnár & T. Schwandt (U. Sussex), J. M. Scudder (Oberlin College, USA) and G. Violino (U. Hertfordshire). It is published in the folder Astrophysics of Galaxies and it discusses the observed properties of molecular gas in post-merger galaxies and interacting pairs and the physical origin of these properties.

Here is the overlay:

You can read the officially accepted version of this paper on arXiv here.

That’s all for this week. I’ll do another update next Saturday.

#arXiv240906572v2 #AstrophysicsOfGalaxies #DiamondOpenAccess #galaxyFormation #molecularGas #TheOpenJournalOfAstrophysics

Weekly update from the Open Journal of Astrophysics – 29/03/25

It’s time once more for the regular Saturday morning update of papers published at the Open Journal of Astrophysics. Since the last update we have published three new papers which brings the number in Volume 8 (2025) up to 32 and the total so far published by OJAp up to 267.

We’re almost at the end of March so I checked the records. In the first three months of last year we published 22 papers, compared to the 32 so far this year.

We were affected by a few gremlins in the works at Crossref this week which delayed some submissions. Since our DOIs are generated and registered with Crossref at the time of publication this delayed some papers a little.  I think these problems are ongoing but I know that the team at Crossref are working on them so expect will be fixed soon.

Anyway, in chronological order of publication, the three papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is “Gravitational Lensing of Galaxy Clustering” by Brandon Buncher & Gilbert Holder (University of Illinois Urbana Champaign) and Selim Hotinli (Perimeter Institute, Canada). This paper is in the folder marked Cosmology and NonGalactic Astrophysics and it was published on Thursday 27th March 2025. it presents a study of the cross-correlations between lensing reconstruction using galaxies as sources with cosmic shear measurements.

Here is the overlay:

You can read the officially accepted version of this paper on arXiv here.

The second paper of the week is “Reformulating polarized radiative transfer for astrophysical applications. (I) A formalism allowing non-local Magnus solutions” by Edgar S. Carlin (Instituto de Astrofísica de Canarias), Sergio Blanes (Universitat Politcècnica de Valencia) & Fernando Casas (Universitat Jaume I), all in Spain.

It appears in the folder Solar and Stellar Astrophysics. It presents a new family of numerical radiative transfer methods and their potential applications such as accelerating calculations involving Non-Local Thermodynamic Equilibrium. This paper was published on Friday 28th March 2025.

Here is the overlay:

You can find the officially accepted version of this paper on arXiv here.

The final paper, also published on Friday 28th March, is in the folder
Cosmology and NonGalactic Astrophysics. The title is “CosmICweb: Cosmological Initial Conditions for Zoom-in Simulations in the Cloud” and the authors are Michael Buehlmann (Argonne National Laboratory), Lukas Winkler (U. Wien), Oliver Hahn (U. Wien), John C. Helly (ICC Durham) and Adrian Jenkins (ICC Durham).

This paper describes a new database and web interface to store, analyze, and disseminate initial conditions for zoom simulations of objects forming in cosmological simulations. The database can be accessed directly here.

Here is the overlay:

The official published version can be found on the arXiv here.

That’s all for this week. I’ll do another update next Saturday.

#arXiv240200252v3 #arXiv240207988v2 #arXiv240602693v3 #cosmicShear #cosmologicalZoomSimulations #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccessPublishing #galaxyClustering #GravitationalLensing #radiativeTransfer #SolarAndStellarAstrophysics #TheOpenJournalOfAstrophysics

Weekly Update at the Open Journal of Astrophysics – 15/03/2025

The Ideas of March are come, so it’s time for another update of papers published at the Open Journal of Astrophysics. Since the last update we have published two papers, which brings the number in Volume 8 (2025) up to 27 and the total so far published by OJAp up to 262.

The first paper to report is “Dark Energy Survey Year 6 Results: Point-Spread Function Modeling” by Theo Schutt and 59 others distributed around the world, on behalf of the DES Collaboration. It was published on Wednesday March 12th 2025 in the folder Cosmology and NonGalactic Astrophysics. It discusses the improvements made in modelling the Point Spread Function (PSF) for weak lensing measurements in the latest Dark Energy Survey (6-year) data and prospects for the future.

Here is the overlay, which you can click on to make larger if you wish:

You can read the officially accepted version of this paper on arXiv here.

The other paper published this week is “Exploring Symbolic Regression and Genetic Algorithms for Astronomical Object Classification” by Fabio Ricardo Llorella (Universidad Internacional de la Rioja, Spain) & José Antonio Cebrian (Universidad Laboral de Córdoba, Spain), which came out on Thursday 13th March. This one is in the folder marked Astrophysics of Galaxies and it discusses the classification of astronomical objects in the Sloan Digital Sky Survey SDSS-17 dataset using a combination of Symbolic Regressiion and Genetic Algorithms.

The overlay can be seen here:

You can find the “final” version on arXiv here.

That’s it for this week. I’ll have more papers to report next Saturday.

#arXiv250105781v2 #arXiv250309220v1 #AstronomicalObjectClassification #AstrophysicsOfGalaxies #CosmologyAndNonGalacticAstrophysics #DarkEnergySurvey #DES #DiamondOpenAccess #GeneticAlgorithms #OpenAccessPublishing #SloanDigitalSkySurvey #SymbolicRegression #TheOpenJournalOfAstrophysics #weakGravitationalLensing

Weekly Update from the Open Journal of Astrophysics – 01/02/2025

It’s Saturday morning, so once again it’s time for an update of papers published at the Open Journal of Astrophysics. There were no papers to report last week but since the last update we have published four new papers, which brings the number in Volume 8 (2025) up to 11 and the total so far published by OJAp up to 246.

In chronological order of publication, the four papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

First one up is  “A halo model approach for mock catalogs of time-variable strong gravitational lenses” by Katsuya T. Abe & Masamune Oguri (Chiba U, Japan), Simon Birrer & Narayan Khadka (Stony Brook, USA), Philip J. Marshall (Stanford, USA), Cameron Lemon (Stockholm U., Sweden), Anupreeta More (IUCAA, India), and the LSST Dark Energy Science Collaboration. It was published on 27th January 2025 in the folder marked Cosmology and NonGalactic Astrophysics. The paper discusses how to generate mock catalogs of strongly lensed QSOs and Supernovae on galaxy-, group-, and cluster-scales based on a halo model that incorporates dark matter halos, galaxies, and subhalos.

You can find the officially accepted version of this paper on arXiv here.

This paper, also published on Monday 27th January 2025, but in the folder Astrophysics of Galaxies, is “The Soltan argument at redshift 6: UV-luminous quasars contribute less than 10% to early black hole mass growth” by Knud Jahnke (MPI Heidelberg, Germany). This paper presents an argument that almost all growth of supermassive black hole mass at z>6 does not take place in UV-luminous quasars.

Here is a screen grab of the overlay, which includes the abstract:You can find the officially accepted version of the paper on the arXiv here.

The third paper to announce, published on 29th January 2025 in the folder Cosmology and NonGalactic Astrophysics, is “A Heavy Seed Black Hole Mass Function at High Redshift – Prospects for LISA” by Joe McCaffrey & John Regan (Maynooth U., Ireland), Britton Smith (Edinburgh U., UK), John Wise (Georgia Institute of Technology, USA), Brian O’Shea (Michigan State U., USA) and Michael Norman (University of California, San Diego). This is a numerical study of the growth rates of massive black holes in the early Universe and implications for their detection via gravitational wave emission.

You can see the overlay here:

The accepted version of this paper can be found on the arXiv here.

The last paper of this batch is “Forecasting the Detection of Lyman-alpha Forest Weak Lensing from the Dark Energy Spectroscopic Instrument and Other Future Surveys” by Patrick Shaw & Rupert A. C. Croft (Carnegie Mellon U., USA) and R. Benton Metcalf (U. Bologna, Italy). This paper, published on January 30th 2025, is about extending the applicationof  Lyman-α forest weak gravitational lensing to lower angular source densities than has previously been done, with forecasts for future spectral surveys. It is in the folder marked Cosmology and NonGalactic Astrophysics.

The overlay is here

You can find the accepted version on arXiv here.

Incidentally, we currently have 121 papers under review, including 81 under a revise and resubmit request.

That’s all for this week. I’ll do another update next Saturday.

#arXiv240916413v2 #arXiv241020014v2 #arXiv241103184v2 #arXiv241107509v3 #AstrophysicsOfGalaxies #BlackHoleSeeds #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #eLISA #LSST #LymanAlphaForest #OJAp #OpenAccessPublishing #OpenJournalOfAstrophysics #quasars #SoltanArgument #strongGravitationalLensing #TheOpenJournalOfAstrophysics #weakGravitationalLensing

Weekly Update from the Open Journal of Astrophysics – 18/01/2025

It’s Saturday morning so once again it’s time for an updated of papers published at the Open Journal of Astrophysics. Since the last update we have published three new papers which brings the number in Volume 8 (2025) up to 7 and the total so far published by OJAp up to 242.

In chronological order of publication, the four papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

First one up is “Potential-density pairs for Galaxy discs with exponential or sech^2 vertical profile” by Walter Dehnen and Shera Jafaritabar (Heidelberg, Germany). This paper was published on Tuesday 14th January 2025 in the folder marked Astrophysics of Galaxies. It presents a new set of analytic models for the structure of disc galaxies. The overlay, which includes the abstract, is here:

You can find the officially accepted version of this paper on arXiv here.

The second paper, which was published on Thursday 17th January 2025 also in the folder Astrophysics of Galaxies, is “Quantifying Bursty Star Formation in Dwarf Galaxies” by Yuan-Sen Ting (Ohio State University) and Alexander Ji (U. Chicago). This paper describes an application of Gaussian mixture models to distinguish between discontinuous and continuous star formation histories in dwarf galaxies.

Here is a screen grab of the overlay, which includes the abstract:You can find the officially accepted version of the paper on the arXiv here.

The third paper to announce, also published on 17th January 2025 but in the folder Cosmology and NonGalactic Astrophysics, is “Fast Projected Bispectra: the filter-square approach” by Lea Harscouet, Jessica A. Cowel, Julia Ereza & David Alonso (Oxford U., UK), Hugo Camacho (Brookhaven National Laboratory, USA), Andrina Nicola (Bonn, Germany) and Anže Slosar (Brookhaven). This paper presents Presenting the filtered-squared bispectrum (FSB), a fast and robust estimator of the projected bispectrum for use on cosmological data sets.

You can see the overlay here:

The accepted version of this paper can be found on the arXiv here.

That’s all for this week. I’ll do another update next Saturday.

#arXiv240806807v2 #arXiv240907980v2 #arXiv250105916v1 #bispectrum #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #discGalaxies #dwarfGalaxies #galacticStructure #starFormation #TheOpenJournalOfAstrophysics

Weekly Update from the Open Journal of Astrophysics – 11/01/2025

Welcome to the first update of 2025 from the Open Journal of Astrophysics. For the new year we have started Volume 8. Since the last update of 2024 we have published four new papers which brings the total so far published by OJAp up to 239.

In chronological order of publication, the four papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

First one up is “Weak-Lensing Shear-Selected Galaxy Clusters from the Hyper Suprime-Cam Subaru Strategic Program: I. Cluster Catalog, Selection Function and Mass–Observable Relation” by Kai-Feng Chen (MIT, USA), I-Non Chiu (National Cheng University, Taiwan), Masamune Oguri (Chiba University, Japan), Yen-Ting Lin (IAAAS, Taiwan), Hironao Miyatake (Nagoya, Japan), Satoshi Miyazaki (Nat. Astr. Obs. Japan), Surhud More (IUCAA, India), Takashi Hamana (Nat. Astr. Obs. Japan), Markus M. Rau Carnegie Mellon University, USA), Tomomi Sunayama (Steward Obs., USA), Sunao Sugiyama (U. Penn, USA), Masahiro Takada (U. Tokyo, Japan).

This paper, which was published on Monday 6th January 2025 is in the folder Cosmology and NonGalactic Astrophysics, discusses steps towards towards the extraction of cosmogical constraints from a sample of galaxy clusters selected via weak gravitational lensing

Here is a screen grab of the overlay, which includes the abstract:

You can find the officially accepted version of the paper on the arXiv here.

The second paper to announce, published on 7th January 2025 and also in the folder Cosmology and NonGalactic Astrophysics, is “Cosmology on point: modelling spectroscopic tracer one-point statistics” by Beth McCarthy Gould (Newcastle U., UK), Lina Castiblanco (Bielefeld, Germany), Cora Uhlemann (Bielefeld, Germany), and Oliver Friedrich (LMU, Germany).

You can see the overlay here:

The accepted version of this paper can be found on the arXiv here.

The third paper, published on 9th January 2025, also in the folder Cosmology and NonGalactic Astrophysics, is “Probing Environmental Dependence of High-Redshift Galaxy Properties with the Marked Correlation Function” by Emy Mons and Charles Jose (Cochin University of Science and Technology, India). This paper uses the marked two-point correlation function to measure the environmental dependence of galaxy clustering at high redshift.

Here is the overlay:

The final version accepted on arXiv is here.

Last of this quartet, also published on 9th January 2025, but in the folder Astrophysics of Galaxies is “The infrared luminosity of retired and post-starburst galaxies: A cautionary tale for star formation rate measurements” by Vivienne Wild (St Andrews, UK), Natalia Vale Asari (Universidade Federal de Santa Catarina, Brazil), Kate Rowlands (STScI, Sara L. Ellison (U. Victoria, Canada), Ho-Hin Leung (St Andrews), Christy Tremonti (U. Wisconsin-Madison, USA).

The paper proposes an extension of the semi-analytic formalism to weak lensing and thermal Sunyaev-Zeldovich (tSZ) fields directly on the full-sky, with an emphasis on higher-order correlations. The overlay is here:

You can find the official accepted version on the arXiv here.

That’s all for this week. I’ll do another update next Saturday.

#240907980v2 #arXiv240806807v2 #arXiv250105916v1 #AstrophysicsOfGalaxies #bispectrum #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #discGalaxies #dwarfGalaxies #galacticStructure #onePointStatistics #starFormation #TheOpenJournalOfAstrophysics