Unable to attend our May talk? We have a video! Our guest speaker, Dr. Bryan Gaensler, takes us on a journey through the discovery and rediscovery of Fast Radio Bursts, and the state of the art in detecting and analyzing them.
#fastRadioBursts
Vandaag 10 jaar geleden https://sailing-dulce.nl/home/article-4352 #FastRadioBursts #WOWsignal #SETI Vrijdag 03-04-2015 Sinds 2001 registeren radiosterrenwachten korte en snelle uitbarstingen van radiostraling (FRB's) in een smalle bandbreedte. Ze duren maar een paar milliseconden. Niettemin hebben ze net zoveel energie als de zon in een maand uitzendt. Niemand weet waardoor ze veroorzaakt worden, alleen veronderstelt men dat ze door een kleine bron ergens in de ruimte worden uitgezonden. Die bron kan hooguit..
First results obtained by the k’niPatn k’l⌣ stk’masqt outrigger (KKO) telescope
https://doi.org/10.3847/2041-8213/ad9ddc
KKO is located on the traditional territory of the Similamix People in British Columbia. The Upper Similkameen Indian Band offered the name, which means “a listening device for outer space”.
More insights on this project: https://arxiv.org/abs/2402.07898
#astronomy #Astrophysics #astrodon #CHIME #KKO #radiotelescope #Similamix #BritishColumbia #Similkameen #cosmology #FRB #FastRadioBursts
#FastRadioBursts originate near the surface of stars
Rare burst indicates #FRB likely originate near the star and that they share a feature with emissions of #pulsars, another subtype of #neutronstar.
Data regarding #FRB20221022A seem pretty clear, Key question is whether this particular FRB tells us much about all other FRBs observed, including those from repeating sources. It remains entirely possible more than one type of event produces something that looks like an FRB
https://arstechnica.com/science/2025/01/new-findings-get-us-closer-to-knowing-what-causes-radio-bursts/
Using the Westerbork radio telescope, astronomers have discovered two dozen of the unexplained Fast Radio Bursts and discovered their origins!
https://youtu.be/cB_9s7vUVFY?si=5ss2B_8QtNCS6S2p
#Science #FastRadioBursts #Astronomy #ASTRON #JoerivanLeeuwen
Have you seen this great new discovery on the origin of fast radio bursts?
https://news.mit.edu/2025/mit-scientists-pin-down-origins-fast-radio-burst-0101
Cordial congrats to Kenzie & friends!! 💥
Major FRB Updates: Possible Sources of Mystery Radio Signals - YouTube
https://www.youtube.com/watch?v=zkoHhTHn-g0
🌌 A new study led by astronomer Kritti Sharma reveals that fast radio bursts (FRBs) are more likely from galaxies with younger star populations—but these galaxies are unusually large and rare.
FRBs are brief, intense radio bursts traveling millions to billions of light-years. Though we’ve ruled out aliens, there’s much to learn about these enigmatic cosmic phenomena.
#FastRadioBursts #Astronomy #SpaceMystery #ScienceNews #GoodNews
https://www.sciencealert.com/the-mysterious-origins-of-fast-radio-bursts-may-finally-be-identified
Scientists tune into wild origins of #fastradiobursts
FRBs are millisecond-duration events detected from within and beyond the Milky Way. Within our own galaxy, evidence suggests FRBs come from a rare type of neutron #star called a #magnetar. Like other neutron stars, magnetars are extremely dense – they might be 12mi across but possess a mass about 1.4 times that of Sun – and they also have magnetic fields hundreds of millions of times stronger than human-made magnets.
https://www.theregister.com/2024/11/07/fast_radio_burst_research/
Once again, it’s time for a quick update of activity at the Open Journal of Astrophysics. This week we have published another batch of four papers which takes the count in Volume 7 (2024) up to 77 and the total published altogether by OJAp up to 192. Things are picking up again after the summer lull, and we’re moving towards a double century. If we keep up a steady average of four per week we’ll be at 200 per year.
In chronological order, 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 “Quasi-two-dimensionality of three-dimensional, magnetically dominated, decaying turbulence” by Shreya Dwivedi, Chandranathan Anandavijayan, and Pallavi Bhat of TIFR, Bangalore, India. The paper presents an analysis of numerical simulations of MHD turbulence using Minkowski Functionals, with implications for local anisotropies revealed therein. It was published on 9th September 2024 and is in the folder marked High-Energy Astrophysical Phenomena.
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, also published on 9th September 2024, is “mochi_class: Modelling Optimisation to Compute Horndeski In class” by Matteo Cataneo (Universität Bonn, Germany) and Emilio Bellini (SISSA, Trieste, Italy). This article presents a cosmological Einstein-Boltzmann solver adapted to work with Horndeski gravity, together with validation tests. It is in the folder Cosmology and NonGalactic Astrophysics.
You can see the overlay here:
The accepted version of this paper can be found on the arXiv here.
The third paper, published on 11th September 2024 in the folder marked High-Energy Astrophysical Phenomena, is by Jonathan Katz of Washington University, St Louis, USA. The title is “The Sources of Fast Radio Bursts” and it presents a discussion of the possible physical origin of Fast Radio Bursts, arguing that they fall into two distinct groups.
The final version accepted on arXiv is here.
Last in this batch, but by no means least, is “RMS asymmetry: a robust metric of galaxy shapes in images with varied depth and resolution” by Elizaveta Sazonova (U. Waterloo, Canada) with 15 other authors spread around the world (in Canada, USA, Australia, Italy, Chile, UK, Poland, Mexico, Germany, and Spain). This paper presents a method of quantifying distortion of galaxy images connected with mergers or other instabilities. It is in the folder marked Astrophysics of Galaxies and was published on September 12th 2024 with this overlay:
You can find the official accepted version on the arXiv here.
That’s all for now. I will post another update in a week.
https://telescoper.blog/2024/09/14/four-new-publications-at-the-open-journal-of-astrophysics-7/
#arXiv220713241v4 #arXiv240101965v2 #arXiv240405792v2 #arXiv240711968v2 #AstrophysicsOfGalaxies #CosmologyAndNonGalacticAstrophysics #EinsteinBoltzmannEquations #fastRadioBursts #galaxies #galaxyMergers #GalaxyShapes #HighEnergyAstrophysicalPhenomena #HorndeskiGravity #magnetohydrodynamics #MHD #MinkowskiFunctionals #OpenJournalOfAstrophysics #PlasmaPhysics #plasmaTurbulence #TheOpenJournalOfAstrophysics
#astronomy #FastRadioBursts #VLA
An article published in the journal "Nature" reports the results of a study on some fast radio bursts linked to persistent emissions that associates that long duration with a bubble of plasma that generates that radiation. A team of researchers registered and studied the fast radio burst with the weakest persistent emission detected so far, cataloged as FRB20201124A, and two other similar events with the VLA radio telescope.
New in the #VirtualObservatory: “Apertif Time Domain FRB detection cone search (DR2)” by Joeri van Leeuwen et al.
https://vo.astron.nl/arts_dr2/q/det_cone/info
#SkySurveys #FastRadioBursts
Polarized light yields fresh insight into mysterious #fastradiobursts
Events we've been lumping together as #FRB could actually be the product of two different events. The repeating events occur in the environment around a #magnetar. The one-shot events are triggered by the death of a highly magnetized #neutronstar within a few hours of its formation. #Astronomers announced the detection of a possible #blitzar potentially associated with an FRB last year.
https://arstechnica.com/science/2024/06/polarized-light-yields-fresh-insight-into-mysterious-fast-radio-bursts/
Radio signal from space repeats every hour
So is behind such a weird radio signal? Let’s get it out of way up front: it’s not aliens. Most likely explanation, according to the scientists who discovered it, is that it’s coming from a neutron star or a white dwarf.
"It might even prompt us to reconsider our decades-old understanding of neutron stars or white dwarfs; how they emit radio waves and what their populations are like in our Milky Way galaxy."
https://newatlas.com/space/radio-signal-space-repeats-hour-neutron-star-white-dwarf/
#fastradiobursts
Fast Radio Bursts (FRBs) are millisecond duration bursts of radio waves that travel across the Universe - and to date, we still are unsure what causes them (though, we have theories).
They were discovered in 2007 when looking for archival data collected by Parkes 📡
The three senior science authors who led the discovery, Duncan Lorima, Maura McLaughlin and Matthew Bailes have now published an overview of FRBs, and its great!
So nice to see undergrad student Ash Narkevic credited with their role in this huge discovery in science too!
Whilst we don't know what causes FRBs, we can use them as probes to 'weigh' the Universe with them! Wrote about this here: https://www.spaceaustralia.com/index.php/feature/we-found-it-fast-radio-bursts-shed-light-missing-matter
Read the FRB review article (Lorimer, McLaughlin, Bailes) here: https://link.springer.com/article/10.1007/s10509-024-04322-6
📸 Lorimer et al. 2024 / J-P Macquart
#SpaceAustralia #FastRadioBursts #RadioAstronomy #Astrophysics #Astrodon
Finally, an upgrade to ASKAP to be better at detecting Fast Radio Bursts
#ATRASC2024 #URSI #ATNF #ASKAP #CSIRO #CRACO #FRB #FastRadioBursts
Inside quest to map the universe with mysterious bursts of radio energy
#Astronomers still don’t know what causes #fastradiobursts, but they’re starting to use them to illuminate the #space between #galaxies. They flash in random and unpredictable patterns from all over the sky. Some appear from within our #galaxy, others from previously unexamined depths of universe. Some repeat in patterns for days and then vanish; others have been repeating every few days since found. https://www.technologyreview.com/2024/05/01/1091934/inside-the-quest-to-map-the-universe-with-mysterious-bursts-of-radio-energy/
#Fastradiobursts: #Research introduces a novel approach to characterize their behavior
A wobbling magnetized #star challenges the origin of repeating #fastradiobursts
https://scitechdaily.com/cosmic-whispers-unveiled-scientists-unlock-new-secrets-of-mysterious-fast-radio-bursts/
Cosmic Whispers Unveiled: Scientists Unlock New Secrets of Mysterious Fast Radio Bursts
This research demonstrates that innovative telescopes with unique capabilities, such as the ATA, offer fresh perspectives on unresolved enigmas in the field of FRB science.
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