Punaise ! Une galaxie repérée par James Webb alors que l’Univers n’avait que 2 % de son âge : MoM-z14 bouleverse nos idées sur l’aube cosmique. www.techno-science.net/actualite/re... #Space #Science #Innovation #Astrophysics #JWST #MoMz14 #EarlyUniverse #CosmicDawn #JWSTData

🔭 Record battu: une galaxie ob...

Punaise ! Une galaxie repérée par James Webb alors que l’Univers n’avait que 2 % de son âge : MoM-z14 bouleverse nos idées sur l’aube cosmique.
https://www.techno-science.net/actualite/record-battu-galaxie-observee-alors-univers-avait-son-age-actuel-N28304.html
#Space #Science #Innovation #Astrophysics #JWST #MoMz14 #EarlyUniverse #CosmicDawn #JWSTData

Weekly Update from the Open Journal of Astrophysics – 31/01/2026

It’s Saturday once more so time for another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further three papers, bringing the number in Volume 9 (2026) to 18 and the total so far published by OJAp up to 466.

I will continue to include the posts made on our Mastodon account (on Fediscience) to encourage you to visit it. Mastodon is a really excellent service, and a more than adequate replacement for X/Twitter which nobody should be using; these announcement also show the DOI for each paper.

The first paper to report this week is “Probing Stellar Kinematics with the Time-Asymmetric Hanbury Brown and Twiss Effect” by Lucijana Stanic (University of Zurich, Switzerland) and 13 others based in Zurich, Lausanne and Geneva (all in Switzerland). This was published on Monday 26th January 2026 in the folder Instrumentation and Methods for Astrophysics. This research demonstrates that intensity interferometry can reveal internal stellar kinematics, providing a new way to observe stellar dynamics with high time resolution.

The overlay is here:

You can find the officially accepted version on arXiv here and the announcement on Fediverse here:

https://fediscience.org/@OJ_Astro/115961234375736584

The second paper is “DIPLODOCUS I: Framework for the evaluation of relativistic transport equations with continuous forcing and discrete particle interactions” by Christopher N Everett & Garret Cotter (University of Oxford, UK). This was published on Tuesday January 27th 2026 in the folder High-Energy Astrophysical Phenomena. DIPLODOCUS is a new framework for mesoscopic modelling of astrophysical systems, using an integral formulation of relativistic transport equations and a discretisation procedure for particle distributions.

The overlay for this one is here:

The official version of the paper can be found on arXiv here and the Fediverse announcement here:

https://fediscience.org/@OJ_Astro/115966199181415094

Next, also published on Tuesday January 27th but in the folder Cosmology and Nongalactic Astrophysics we have “The Atacama Cosmology Telescope: DR6 Sunyaev-Zel’dovich Selected Galaxy Clusters Catalog” by M. Aguena et al. (101 authors altogether), on behalf of the ACT-DES-HSC Collaboration. This article reports on the discovery of 10,040 galaxy clusters in the Atacama Cosmology Telescope data, including 1,180 clusters at high redshifts, using the Sunyaev-Zel’dovich effect.

The overlay is here:

The official version can be found on arXiv here and the Fediverse announcement is here:

https://fediscience.org/@OJ_Astro/115966458299870033

And finally for this week we have a paper published yesterday, Friday 30th January 2026, in the folder Astrophysics of Galaxies. This is the paper I blogged about yesterday: “A Cosmic Miracle: A Remarkably Luminous Galaxy at zspec = 14.44 Confirmed with JWST” by Rohan Naidu (MIT Kavli Institute) and an international cast of 45 others. This article reports on the discovery by the James Webb Space Telescope (JWST) of a bright galaxy, MoM-z14, located 280 million years post-Big Bang, that challenges models of galaxy formation and the star-formation history of early galaxies.

The overlay is here:

The accepted version can be found on arXiv here, and the fediverse announcement is here:

https://fediscience.org/@OJ_Astro/115982837486159819

And that concludes the update for this week. I will do another next Saturday.

#ACTDESHSCCollaboration #arXiv250511263v2 #arXiv250721459v3 #arXiv250813296v4 #arXiv250913152v2 #AstridSimulations #AstrophysicsOfGalaxies #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #DIPLODOCUS #galaxyClusters #galaxyFormation #HanburyBrownAndTwiss #HighEnergyAstrophysicalPhenomena #InstrumentationAndMethodsForAstrophysics #JWST #largeScaleStructureOfTheUniverse #MoMZ14 #OpenAccess #OpenAccessPublishing #OpenJournalOfAstrophysics #PlasmaPhysics #relativisticTransportEquations #starFormation #StellarKinematics #SunyaevZeDovichEffect #TheOpenJournalOfAstrophysics

Webb vindt het verst verwijderde sterrenstelsel tot nu toe
Volgens een team van astronomen bestond MoM-z14 al slechts 280 miljoen jaar na de Oerknal.
#heelal #MoMZ14 #oerknal #sterrenstelselcluster #TijdperkVanReïonisatie #VroegeHeelal #WebbSpaceTelescope
https://www.kuuke.nl/webb-vindt-het-verst-verwijderde-sterrenstelsel-tot-nu-toe/

NASA Webb repousse les limites de l’univers observable vers le Big Bang
🔸 Le télescope spatial James Webb de la NASA montre la galaxie MoM-z14 telle qu’elle apparaissait dans un passé lointain, seulement 280 millions d’années après le début de l’univers lors du Big Bang.
https://science.nasa.gov/missions/webb/nasa-webb-pushes-boundaries-of-observable-universe-closer-to-big-bang/
#NASA #Webb #télescope #science #tech #astronomie #astrophysique #cosmos #Univers #étoiles #galaxies #BigBang #MoMz14

JWST repère une galaxie née 280 millions d’années après le Big Bang. Plus lointaine qu’on pensait possible.
https://www.geo.fr/sciences/la-galaxie-la-plus-eloignee-jamais-observee-a-ete-identifiee-par-le-telescope-james-webb-226663
#Space #Astro #JWST #GalaxiePrimitve #DarkAges #MoMz14 #MirageOrMiracle

'Cosmic miracle!' #JamesWebb #Space #Telescope discovers the earliest galaxy ever seen
#JWST discovered most distant galaxy ever observed, named #MoMz14. #NASA estimates it existed just 280 million years after the #BigBang.
"First and foremost, at the moment, this is the most distant object known to humanity. That title changes every so often, but I find it is always cause for pause and reflection," Yale University professor of #Astronomy and #Physics Pieter van Dokkum
https://www.space.com/astronomy/cosmic-miracle-james-webb-space-telescope-discovers-the-earliest-galaxy-ever-seen

The Oldest, Most Distant Galaxy Ever Photographed Is 13.5 Billion Years Old https://petapixel.com/2025/05/22/the-oldest-most-distant-galaxy-ever-photographed-is-13-5-billion-years-old/ #jameswebbspacetelescope #ancientgalaxy #astronomy #discovery #physics #science #galaxy #hubble #momz14 #Space #space #News #jwst #webb