#galaxy-evolution — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #galaxy-evolution, aggregated by home.social.
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Astronomers detect first direct evidence of star-forming gas in early galaxies
The first galaxies were already busy by the time the universe was 700 to 800 million years old.…
#NewsBeep #News #Science #ALMA #Astronomy #AU #Australia #cosmicdawn #Cosmology #earlygalaxies #epochofreionization #GalaxyEvolution #interstellarmedium #Jameswebbspacetelescope #neutralgas #oxygenemissionline #research #SpaceNews #Starformation
https://www.newsbeep.com/au/742616/ -
James Webb Space Telescope discovers ‘galaxy-killing’ wind that may explain why some early galaxies lived f…
When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit:…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Science #formingstars #GalaxyEvolution #JamesWebbSpaceTelescope #massivegalaxies #RebeccaDavies #RoyalAstronomicalSociety
https://www.newsbeep.com/us/700570/ -
Ultra-Faint Dwarf Galaxies Could Unlock Secrets of the Early Universe
(A) Dark matter distribution in our neighborhood in the Universe, the so-called Local Group of galaxies. The two…
#NewsBeep #News #Physics #Astronomy #Astrophysics #AU #Australia #GalaxyEvolution #Science #StockholmUniversity #Universe
https://www.newsbeep.com/au/686532/ -
Weekly Update from the Open Journal of Astrophysics – 09/05/2026
It’s Saturday once again, so time for another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further five papers, bringing the number in Volume 9 (2026) to 99 and the total so far published by OJAp up to 547. We didn’t quite make it to a hundred for the year last week, but will do so with the next paper.
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 announcements also show the DOI for each paper.
The first paper to report this week is “Formation of Close Binaries through Massive Black Hole Perturbations and Chaotic Tides” by Howard Hao-Tse Huang and Wenbin Lu (University of California at Berkeley, USA). This one was published on Wednesday 6th May 2026 in the folder Astrophysics of Galaxies. The paper presents a model of massive black hole-binary systems, showing that repeated tidal interactions can lead to the creation of hyper-velocity stars and other nuclear transients.
The overlay for this paper is here
You can find the officially accepted version on arXiv here and the announcement on Fediverse here:
https://fediscience.org/@OJ_Astro/116526323790020433
The second paper for this week, also Wednesday 6th May, but in the folder Cosmology and Nongalactic Astrophysics is “Detection of supernova magnitude fluctuations induced by large-scale structure” by Andrew Nguyen (Swinburne Institute of Technology, Australia) and 58 others based all around the world. This study uses supernovae and galaxy velocities to measure the universe’s structure growth rate, confirming the Planck LambdaCDM model prediction. The methodology is validated and shows potential for future research.
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/116526449130876366
Next one up, the third paper of the week, also published on Wednesday 6th May in the folder Cosmology and Nongalactic Astrophysics is “Comparing cosmic shear nulling methods for Stage-IV surveys” by Naomi Clare Robertson and Alex Hall (University of Edinburgh, UK). This study compares three strategies for reducing baryon feedback impact on cosmic shear measurements. All methods effectively mitigate bias, with varying degrees of efficiency and information preservation.
The overlay for this one is here:
The final, accepted version can be found on arXiv here and the Mastodon announcement is here:
https://fediscience.org/@OJ_Astro/116526251813375105
The fourth paper this week, published on Thursday May 7th, is “Egent: An Autonomous Agent for Equivalent Width Measurement” by Yuan-Sen Ting & Serat Mahmud Saad (Ohio State University, USA), Fan Liu (National Astronomical Observatories, Beijing, China), and Yuting Shen (Georgia Institute of Technology, USA). Egent is an autonomous agent that combines multi-Voigt profile fitting with large language model visual inspection for efficient, automated analysis of raw flux spectra, validated against expert measurements. This one is in the folder Instrumentation and Methods for Astrophysics. The associated software can be found here.
The overlay is here:
The officially accepted version can be found on arXiv here and here is the Mastodon announcement:
https://fediscience.org/@OJ_Astro/116531924397498394
The fifth and final article of this week was published on Friday 8th May in the folder Astrophysics of Galaxies. The title is “DiffstarPop: A generative physical model of galaxy star formation history” and it is by Alex Alarcon (Institute of Space Sciences, Barcelona, Spain), Andrew P. Hearin , Matthew R. Becker & Gillian Beltz-Mohrmann (Argonne National Laborarory, USA), and Andrew Benson & Sachi Weerasooriya (Carnegie Observatories, USA). DiffstarPop is a model that accurately and rapidly reproduces statistical distributions of galaxy star formation histories (SFH), using parameters related to galaxy formation physics.
The overlay is here:
You can find the authorized version of this paper on arXiv here and the Fediverse announcement is here:
https://fediscience.org/@OJ_Astro/116537709130989142
Here endeth this week’s update. There shall be another next Saturday.
P.S. Just a reminder that, thanks to the efforts of a member of our Editorial Board, the Open Journal of Astrophysics now has a Wikipedia page.
#arXiv251007673v2 #arXiv251027604v3 #arXiv251111965v2 #arXiv251201270v2 #arXiv251215604v2 #AstrophysicsOfGalaxies #BaryonicFeedback #blackHoleBinaries #cosmicShear #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #Egent #EquivalentWidth #galaxyEvolution #hyperVelocityStars #InstrumentationAndMethodsForAstrophysics #nuclearTransients #OpenAccess #OpenAccessPublishing #peculiarVelocities #supernovae #VoigtProfiles #weakGravitationalLensing -
Weekly Update from the Open Journal of Astrophysics – 09/05/2026
It’s Saturday once again, so time for another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further five papers, bringing the number in Volume 9 (2026) to 99 and the total so far published by OJAp up to 547. We didn’t quite make it to a hundred for the year last week, but will do so with the next paper.
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 announcements also show the DOI for each paper.
The first paper to report this week is “Formation of Close Binaries through Massive Black Hole Perturbations and Chaotic Tides” by Howard Hao-Tse Huang and Wenbin Lu (University of California at Berkeley, USA). This one was published on Wednesday 6th May 2026 in the folder Astrophysics of Galaxies. The paper presents a model of massive black hole-binary systems, showing that repeated tidal interactions can lead to the creation of hyper-velocity stars and other nuclear transients.
The overlay for this paper is here
You can find the officially accepted version on arXiv here and the announcement on Fediverse here:
https://fediscience.org/@OJ_Astro/116526323790020433
The second paper for this week, also Wednesday 6th May, but in the folder Cosmology and Nongalactic Astrophysics is “Detection of supernova magnitude fluctuations induced by large-scale structure” by Andrew Nguyen (Swinburne Institute of Technology, Australia) and 58 others based all around the world. This study uses supernovae and galaxy velocities to measure the universe’s structure growth rate, confirming the Planck LambdaCDM model prediction. The methodology is validated and shows potential for future research.
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/116526449130876366
Next one up, the third paper of the week, also published on Wednesday 6th May in the folder Cosmology and Nongalactic Astrophysics is “Comparing cosmic shear nulling methods for Stage-IV surveys” by Naomi Clare Robertson and Alex Hall (University of Edinburgh, UK). This study compares three strategies for reducing baryon feedback impact on cosmic shear measurements. All methods effectively mitigate bias, with varying degrees of efficiency and information preservation.
The overlay for this one is here:
The final, accepted version can be found on arXiv here and the Mastodon announcement is here:
https://fediscience.org/@OJ_Astro/116526251813375105
The fourth paper this week, published on Thursday May 7th, is “Egent: An Autonomous Agent for Equivalent Width Measurement” by Yuan-Sen Ting & Serat Mahmud Saad (Ohio State University, USA), Fan Liu (National Astronomical Observatories, Beijing, China), and Yuting Shen (Georgia Institute of Technology, USA). Egent is an autonomous agent that combines multi-Voigt profile fitting with large language model visual inspection for efficient, automated analysis of raw flux spectra, validated against expert measurements. This one is in the folder Instrumentation and Methods for Astrophysics. The associated software can be found here.
The overlay is here:
The officially accepted version can be found on arXiv here and here is the Mastodon announcement:
https://fediscience.org/@OJ_Astro/116531924397498394
The fifth and final article of this week was published on Friday 8th May in the folder Astrophysics of Galaxies. The title is “DiffstarPop: A generative physical model of galaxy star formation history” and it is by Alex Alarcon (Institute of Space Sciences, Barcelona, Spain), Andrew P. Hearin , Matthew R. Becker & Gillian Beltz-Mohrmann (Argonne National Laborarory, USA), and Andrew Benson & Sachi Weerasooriya (Carnegie Observatories, USA). DiffstarPop is a model that accurately and rapidly reproduces statistical distributions of galaxy star formation histories (SFH), using parameters related to galaxy formation physics.
The overlay is here:
You can find the authorized version of this paper on arXiv here and the Fediverse announcement is here:
https://fediscience.org/@OJ_Astro/116537709130989142
Here endeth this week’s update. There shall be another next Saturday.
P.S. Just a reminder that, thanks to the efforts of a member of our Editorial Board, the Open Journal of Astrophysics now has a Wikipedia page.
#arXiv251007673v2 #arXiv251027604v3 #arXiv251111965v2 #arXiv251201270v2 #arXiv251215604v2 #AstrophysicsOfGalaxies #BaryonicFeedback #blackHoleBinaries #cosmicShear #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #Egent #EquivalentWidth #galaxyEvolution #hyperVelocityStars #InstrumentationAndMethodsForAstrophysics #nuclearTransients #OpenAccess #OpenAccessPublishing #peculiarVelocities #supernovae #VoigtProfiles #weakGravitationalLensing -
Weekly Update from the Open Journal of Astrophysics – 09/05/2026
It’s Saturday once again, so time for another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further five papers, bringing the number in Volume 9 (2026) to 99 and the total so far published by OJAp up to 547. We didn’t quite make it to a hundred for the year last week, but will do so with the next paper.
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 announcements also show the DOI for each paper.
The first paper to report this week is “Formation of Close Binaries through Massive Black Hole Perturbations and Chaotic Tides” by Howard Hao-Tse Huang and Wenbin Lu (University of California at Berkeley, USA). This one was published on Wednesday 6th May 2026 in the folder Astrophysics of Galaxies. The paper presents a model of massive black hole-binary systems, showing that repeated tidal interactions can lead to the creation of hyper-velocity stars and other nuclear transients.
The overlay for this paper is here
You can find the officially accepted version on arXiv here and the announcement on Fediverse here:
https://fediscience.org/@OJ_Astro/116526323790020433
The second paper for this week, also Wednesday 6th May, but in the folder Cosmology and Nongalactic Astrophysics is “Detection of supernova magnitude fluctuations induced by large-scale structure” by Andrew Nguyen (Swinburne Institute of Technology, Australia) and 58 others based all around the world. This study uses supernovae and galaxy velocities to measure the universe’s structure growth rate, confirming the Planck LambdaCDM model prediction. The methodology is validated and shows potential for future research.
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/116526449130876366
Next one up, the third paper of the week, also published on Wednesday 6th May in the folder Cosmology and Nongalactic Astrophysics is “Comparing cosmic shear nulling methods for Stage-IV surveys” by Naomi Clare Robertson and Alex Hall (University of Edinburgh, UK). This study compares three strategies for reducing baryon feedback impact on cosmic shear measurements. All methods effectively mitigate bias, with varying degrees of efficiency and information preservation.
The overlay for this one is here:
The final, accepted version can be found on arXiv here and the Mastodon announcement is here:
https://fediscience.org/@OJ_Astro/116526251813375105
The fourth paper this week, published on Thursday May 7th, is “Egent: An Autonomous Agent for Equivalent Width Measurement” by Yuan-Sen Ting & Serat Mahmud Saad (Ohio State University, USA), Fan Liu (National Astronomical Observatories, Beijing, China), and Yuting Shen (Georgia Institute of Technology, USA). Egent is an autonomous agent that combines multi-Voigt profile fitting with large language model visual inspection for efficient, automated analysis of raw flux spectra, validated against expert measurements. This one is in the folder Instrumentation and Methods for Astrophysics. The associated software can be found here.
The overlay is here:
The officially accepted version can be found on arXiv here and here is the Mastodon announcement:
https://fediscience.org/@OJ_Astro/116531924397498394
The fifth and final article of this week was published on Friday 8th May in the folder Astrophysics of Galaxies. The title is “DiffstarPop: A generative physical model of galaxy star formation history” and it is by Alex Alarcon (Institute of Space Sciences, Barcelona, Spain), Andrew P. Hearin , Matthew R. Becker & Gillian Beltz-Mohrmann (Argonne National Laborarory, USA), and Andrew Benson & Sachi Weerasooriya (Carnegie Observatories, USA). DiffstarPop is a model that accurately and rapidly reproduces statistical distributions of galaxy star formation histories (SFH), using parameters related to galaxy formation physics.
The overlay is here:
You can find the authorized version of this paper on arXiv here and the Fediverse announcement is here:
https://fediscience.org/@OJ_Astro/116537709130989142
Here endeth this week’s update. There shall be another next Saturday.
P.S. Just a reminder that, thanks to the efforts of a member of our Editorial Board, the Open Journal of Astrophysics now has a Wikipedia page.
#arXiv251007673v2 #arXiv251027604v3 #arXiv251111965v2 #arXiv251201270v2 #arXiv251215604v2 #AstrophysicsOfGalaxies #BaryonicFeedback #blackHoleBinaries #cosmicShear #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #Egent #EquivalentWidth #galaxyEvolution #hyperVelocityStars #InstrumentationAndMethodsForAstrophysics #nuclearTransients #OpenAccess #OpenAccessPublishing #peculiarVelocities #supernovae #VoigtProfiles #weakGravitationalLensing -
Supernovae help astronomers measure how the Universe expands over time
Astronomers have leaned on Type Ia supernovae for decades because these stellar explosions act like mile markers across…
#NewsBeep #News #Science #artificialintelligenceinastronomy #Astronomy #AU #Australia #cosmicexpansion #Cosmology #Darkenergy #GalaxyEvolution #interstellardust #lsst #photometricredshift #research #SpaceNews #supernovacosmology #TypeIasupernovae #VeraRubinObservatory
https://www.newsbeep.com/au/658739/ -
Weekly Update from the Open Journal of Astrophysics – 02/05/2026
Here we are, on schedule, with another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further seven papers, bringing the number in Volume 9 (2026) to 94 and the total so far published by OJAp up to 542. I checked the corresponding update for last year (on 3rd May 2025), and we’ve had an increase from 54 to 94 in papers published (about 74%) between the first four months of 2025 and the first four months of 2026.
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 announcements also show the DOI for each paper.
The first paper to report this week is “DESI-DR1 3 × 2-pt analysis: consistent cosmology across weak lensing surveys” by Anna Porredon (CIEMAT, Madrid, Spain) and 72 others (DESI Colllaboration). This paper was published on Tuesday 28th April in the folder Cosmology and Nongalactic Astrophysics. This paper presents a joint cosmological analysis of galaxy clustering and gravitational lensing observations, providing consistent constraints on cosmological parameters. The analysis also introduces a new blinding procedure to prevent confirmation bias. See this post for news of an important DESI milestone.
The overlay for this paper is here
You can find the officially accepted version on arXiv here and the announcement on Fediverse here:
https://fediscience.org/@OJ_Astro/116480407578621011
The second paper for this week, also published on Tuesday 28th April but in the folder High-Energy Astrophysical Phenomena is “Masers and Broad-Line Mapping Favor Magnetically-Dominated AGN Accretion Disks” by Philip F. Hopkins (Caltech, USA), Dalya Baron (Stanford U., USA) and Joanna M. Piotrowska (Caltech). This one presents a new constraint on supermassive black hole accretion disks physics, suggesting that outer regions are likely in a ‘hyper-magnetized’ state, as thermal or radiation pressure models appear inconsistent.
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/116480505354195181
Next one up, the third paper of the week, is “Galaxy mergers and disk angular momentum evolution: stellar halos as a critical test” by Eric F. Bell (U. Michigan, Ann Arbor, USA), Richard D’Souza (Vatican Observatory), Monica Valluri & Katya Gozman (U. Michigan). This was published on Wednesday 29th April in the folder Astrophysics of Galaxies. The paper argues that satellite accretion impacts the angular momentum evolution of galaxies, often causing significant reorientation. This process is detectable in Milky Way-mass galaxies so the idea is testable observationally.
The overlay for this one is here:
The final, accepted version can be found on arXiv here and the Mastodon announcement is here:
https://fediscience.org/@OJ_Astro/116486649450860283
The fourth paper this week, published on Thursday April 30th, is “Time-Dilation Methods for Extreme Multiscale Timestepping Problems” by Philip F. Hopkins and Elias R. Most (Caltech, USA). This paper is in the folder Instrumentation and Methods for Astrophysics: it presents a new method for astrophysical simulations that modulates time evolution with a variable dilation/stretch factor, improving efficiency and accuracy in modeling processes across different scales.
The overlay is here:
The finally accepted version of this paper can be found here and the Mastodon announcement follows:
https://fediscience.org/@OJ_Astro/116492226856595031
The fifth article of this week was also published on Thursday 30th April, but in the folder Astrophysics of Galaxies. The title is “Cosmic Rays on Galaxy Scales: Progress and Pitfalls for CR-MHD Dynamical Models” and the author is Philip F. Hopkins (Caltech, USA) who has three papers featured this week. The paper presents an overview of cosmic ray (CR) modeling, highlighting its influence on galactic physics and star formation. It addresses previous modeling errors and presents new methods for full-spectrum dynamics.
The overlay is here:
You can find the authorized version of this paper on arXiv here and the Fediverse announcement is here:
https://fediscience.org/@OJ_Astro/116492282488422075
The sixth paper of the week is “Baryonification III: An accurate analytical model for the dispersion measure probability density function of fast radio bursts” by MohammadReza Torkamani (Universität Bonn, Germany) and 8 others based in Germany, Switzerland, UK and Sweden. This article was also published on Thursday April 30th in the folder Cosmology and Nongalactic Astrophysics. It presents a framework for predicting dispersion measures of fast radio bursts using the baryonification model, providing a cost-effective alternative to hydrodynamical simulations. The model’s accuracy is validated through full numerical simulations. The overlay is here:
You can find the officially-accepted version on arXiv here and the Mastodon announcement here:
https://fediscience.org/@OJ_Astro/116492403170125062
Seventh and finally for this week we have “The stellar and dark matter distributions in early-type galaxies measured by stacked weak gravitational lensing” by Momoka Fujikawa and Masamune Oguri (Chiba University, Japan). This study uses weak gravitational lensing to investigate stellar mass and dark matter density in red galaxies, suggesting a stronger feedback effect than current simulations predict. This was published on Friday 1st May 2026 in the folder Astrophysics of Galaxies. The overlay is here:
You can find the officially-accepted version on arXiv here and the Fediverse announcement is here:
https://fediscience.org/@OJ_Astro/116497987401632687
And that concludes this week’s update. I’ll do another one at the end of next week. Will Vol. 9 have reached a hundred by then?
P.S. Just a reminder that, thanks to the efforts of a member of our Editorial Board, the Open Journal of Astrophysics now has a Wikipedia page.
#32PtAnalysis #ActiveGalacticNuclei #AGN #arXiv250907104v2 #arXiv251009756v2 #arXiv251209342v2 #arXiv251215960v3 #arXiv260106253v2 #arXiv260118784v2 #arXiv260424965v1 #AstrophysicsOfGalaxies #baryonification #ComputationalAstrophysics #cosmicRays #CosmologyAndNonGalacticAstrophysics #DarkEnergySpectroscopicInstrument #DESI #DiamondOpenAccess #DiamondOpenAccessPublishing #DispersionMeasures #fastRadioBursts #galacticCosmicRays #galaxyEvolution #galaxyFormation #galaxyMergers #HighEnergyAstrophysicalPhenomena #InstrumentationAndMethodsForAstrophysics #magnetohydrodynamics #masers #MilkyWay #OpenAccess #OpenAccessPublishing #SolarAndStellarAstrophysics #SolarCorona #supermassiveBlackHoles #VeraCRubinObservatory #weakGravitationalLensing #wikipedia -
Weekly Update from the Open Journal of Astrophysics – 25/04/2026
So here we are again, on a Saturday morning, with another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further five papers, bringing the number in Volume 9 (2026) to 87 and the total so far published by OJAp up to 535.
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 announcements also show the DOI for each paper.
The first paper to report this week is “Bayesian Cosmic Void Finding with Graph Flows” by Leander Thiele (U. Tokyo, Japan). This was published on Monday 20th April in the folder Cosmology and Nongalactic Astrophysics. The paper presents a method using a deep graph neural network to identify cosmic voids in sparse galaxy surveys, improving upon traditional deterministic algorithms by considering the problem’s probabilistic nature. 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/116435864086025246
The second paper for this week, published on Wednesday 22nd April in the folder Astrophysics of Galaxies, is “Sifting for a Stream: The Morphology of the 300S Stellar Stream” by Benjamin Cohen (U. Chicago, USA) and 20 others distributed around the world. This study analyzes the morphology of the $300S$ stellar stream, revealing three density peaks, a possible gap, and a kink, suggesting significant influence from the Large Magellanic Cloud on its structure.
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/116447005556180402
Next one up, the third paper of the week, is “IRMaGiC: Extending Luminous Red Galaxy Selection into the Infrared with Joint Rubin Observatory’s Large Survey of Space Time and Roman’s High Latitude Imaging Survey” by Zhiyuan Guo & Chris. W. Walter (Duke U., USA) and Eli S. Rykoff (Stanford U., USA) on behalf of the LSST Dark Energy Science Collaboration. This was published on Wednesday April 22nd in the folder Cosmology and Nongalactic Astrophysics. The paper introduces IRMaGiC, an algorithm that improves the selection and redshift estimation of Luminous Red Galaxies (LRGs) by incorporating infrared data, enhancing future cosmological surveys.
The overlay for this one is here:
The final, accepted version can be found on arXiv here and the Mastodon announcement is here:
https://fediscience.org/@OJ_Astro/116447067337351283
The fourth paper this week, published on Thursday April 23rd, is “The Diagnostic Temperature Discrepancy as Evidence for Non-Maxwellian Coronal Electrons” by Victor Edmonds (Final Stop Consulting, USA). This paper, in the folder Solar and Stellar Astrophysics, presents two methods of measuring electron temperature in the quiet solar corona yielding different results, suggesting non-Maxwellian electron velocity distributions may be responsible for the discrepancy.
The overlay is here:
The finally accepted version of this paper can be found here and the Mastodon announcement follows:
https://fediscience.org/@OJ_Astro/116452775389963618
The fifth and final paper for this week was published on Friday 24th April in the folder Astrophysics of Galaxies. The title is “Galaxy evolution in the post-merger regime. IV – The long-term effect of mergers on galactic stellar mass growth and distribution” by Sara L. Ellison (U. Victoria, Canada) and Leonardo Ferreira (Universidade Federal do Rio Grande, Brazil). This study uses a large sample of post-merger galaxies to demonstrate that galaxy mergers trigger significant and extended stellar mass growth in their central regions, independent of stellar population modelling.
The overlay is here:
You can find the authorized version of this paper on arXiv here and the Fediverse announcement is here:
https://fediscience.org/@OJ_Astro/116458316824739014
The overlay for this one is here:
You can find the officially-accepted version on arXiv here and the Mastodon announcement here:
https://fediscience.org/@OJ_Astro/116458316824739014
And that concludes this week’s update. I’ll do another one at the end of next week.
P.S. Thanks to the efforts of a member of our Editorial Board, the Open Journal of Astrophysics now has a Wikipedia page.
#300SStellarStream #arXiv250621410v2 #arXiv251121512v2 #arXiv260114554v2 #arXiv260214630v2 #arXiv260310040v3 #AstrophysicsOfGalaxies #BayesianMethods #CosmicVoids #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #EarthAndPlanetaryAstrophysics #GAIA #galaxyEvolution #galaxyFormation #galaxyMergers #InstrumentationAndMethodsForAstrophysics #IntergalacticMedium #IRMaGiC #LargeMagellanicCloud #LSST #LSSTDarkEnergyScienceCollaboration #MilkyWay #OpenAccess #OpenAccessPublishing #SolarAndStellarAstrophysics #SolarCorona #VeraCRubinObservatory #wikipedia -
Why do some galaxies suddenly stop forming stars? Explore the cosmic mystery behind star formation shutdowns, uncovering clues about dark matter, gas depletion, and galactic evolution.
#CosmicMystery #GalaxyEvolution #StarFormation #UniverseSecrets
https://www.scientificworldinfo.com/2026/04/why-do-some-galaxies-stop-forming-stars-suddenly.html -
COSMIC FOSSILS: NEW 'SPACE ARCHAEOLOGY' UNRAVELS GALAXY'S LONG STORY
Learn how scientists use 'extragalactic archaeology' to study the chemical makeup of gas in galaxy NGC 1365 to understand its 12-billion-year growth history.
#SpaceArchaeology, #GalaxyEvolution, #NGC1365, #Astronomy, #Extragalactic
https://newsletter.tf/space-archaeology-ngc-1365-galaxy-growth-story/
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Scientists can now study galaxy history using chemical 'fingerprints' in gas. This is like finding ancient clues in space to see how galaxies like NGC 1365 grew over billions of years.
#SpaceArchaeology, #GalaxyEvolution, #NGC1365, #Astronomy, #Extragalactic
https://newsletter.tf/space-archaeology-ngc-1365-galaxy-growth-story/ -
Astronomers built the largest and most accurate 3D map of the ultraviolet universe
The space between galaxies is not empty. In a new map of the early universe, those “blank” stretches…
#NewsBeep #News #Science #3Dcosmicmap #AU #Australia #EarlyUniverse #GalaxyEvolution #HETDEX #Hobby-EberlyTelescope #hydrogen #intensitymapping #intergalacticgas #Lymanalpha #McDonaldObservatory #research #SpaceNews #ultravioletrays
https://www.newsbeep.com/au/522822/ -
Astronomers notice an hourglass like shape while scanning an ordinary galaxy |
Initially, the galaxy did not appear to be particularly exciting. In cosmic terms, ESO 130 G012 is only…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Science #astronomersdiscovery #astronomersnoticeanhourglasslikeshape #GalaxyEvolution #hourglassstructuregalaxy #radiolightobservations #whilescanninganordinarygalaxy
https://www.newsbeep.com/us/388970/ -
Scientists Find Cosmic “Fingerprints” of Mysterious Dark Matter
Rutgers researchers have mapped hidden patterns of dark matter by studying distant star-forming galaxies, uncovering clues about how…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #Astronomy #Astrophysics #Darkmatter #GalaxyEvolution #RutgersUniversity #Science
https://www.newsbeep.com/us/197611/ -
JWST May Have Found the Universe’s First Pristine Galaxy
The James Webb Space Telescope may have uncovered one of the Universe’s first galaxies, AMORE6, almost devoid of…
#NewsBeep #News #Space #Astrophysics #AU #Australia #BigBang #Cosmology #GalaxyEvolution #Jameswebbspacetelescope #Science
https://www.newsbeep.com/au/116041/ -
JWST May Have Found the Universe’s First Pristine Galaxy
The James Webb Space Telescope may have uncovered one of the Universe’s first galaxies, AMORE6, almost devoid of…
#NewsBeep #News #Space #Astrophysics #AU #Australia #BigBang #Cosmology #GalaxyEvolution #Jameswebbspacetelescope #Science
https://www.newsbeep.com/au/116041/ -
NASA’s Webb Telescope Discovers 300 Mysterious Objects That Shouldn’t Exist
Astronomers using NASA’s James Webb Space Telescope have spotted 300 mysterious objects that may be some of the…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Space #Astronomy #Astrophysics #GalaxyEvolution #JamesWebbSpaceTelescope #Science #Spectroscopy #UniversityofMissouri-Columbia
https://www.newsbeep.com/us/106228/ -
The James Webb Space Telescope has captured a mysterious, never-before-seen formation nicknamed the Infinity Galaxy. This unique structure may provide clues about galaxy evolution in the early universe. Scientists are now studying its composition, structure, and impact on cosmological theories.
#spacediscovery #astronomy #jameswebbspacetelescope #infinitygalaxy #galaxyevolution
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The James Webb Space Telescope has captured a mysterious, never-before-seen formation nicknamed the Infinity Galaxy. This unique structure may provide clues about galaxy evolution in the early universe. Scientists are now studying its composition, structure, and impact on cosmological theories.
#spacediscovery #astronomy #jameswebbspacetelescope #infinitygalaxy #galaxyevolution
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The James Webb Space Telescope has captured a mysterious, never-before-seen formation nicknamed the Infinity Galaxy. This unique structure may provide clues about galaxy evolution in the early universe. Scientists are now studying its composition, structure, and impact on cosmological theories.
#spacediscovery #astronomy #jameswebbspacetelescope #infinitygalaxy #galaxyevolution
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A Sample of Galaxy Disks (NIRCam) ✨
#DistantGalaxies #Galaxies #GalaxyEvolution #SpiralGalaxies
▶️ 1 new picture from Webb (NASA) https://commons.wikimedia.org/wiki/File:A_Sample_of_Galaxy_Disks_%28NIRCam%29_%282025-121%29.png
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A Sample of Galaxy Disks (NIRCam) ✨
#DistantGalaxies #Galaxies #GalaxyEvolution #SpiralGalaxies
▶️ 1 new picture from Webb (NASA) https://commons.wikimedia.org/wiki/File:A_Sample_of_Galaxy_Disks_%28NIRCam%29_%282025-121%29.png
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A Sample of Galaxy Disks (NIRCam) ✨
#DistantGalaxies #Galaxies #GalaxyEvolution #SpiralGalaxies
▶️ 1 new picture from Webb (NASA) https://commons.wikimedia.org/wiki/File:A_Sample_of_Galaxy_Disks_%28NIRCam%29_%282025-121%29.png
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Indian-origin scientist Dr. Ragadeepika Pucha at the University of Utah, has made a groundbreaking discovery in the study of black holes. Using data from the Dark KNOW MORE...https://blogzine2025.blogspot.com/2025/03/laser-focused-la-salle-green-spikers.html?m=1
#BlackHole #SpaceScience BlackHoleDiscovery #Astrophysics
#GalaxyEvolution #Galaxy #DwarfGalaxies #TEDTalks #TEDxGateway #IndianScientist -
Indian-origin scientist Dr. Ragadeepika Pucha at the University of Utah, has made a groundbreaking discovery in the study of black holes. Using data from the Dark KNOW MORE...https://blogzine2025.blogspot.com/2025/03/laser-focused-la-salle-green-spikers.html?m=1
#BlackHole #SpaceScience BlackHoleDiscovery #Astrophysics
#GalaxyEvolution #Galaxy #DwarfGalaxies #TEDTalks #TEDxGateway #IndianScientist -
JADES Transient Survey (NIRCam Image) ✨
#Cosmology #DistantGalaxies #FirstGalaxies #Galaxies #GalaxyEvolution #GalaxyFormation
⏩ 2 new pictures from Webb (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=4&user=OptimusPrimeBot&ilshowall=1&offset=20240611103226
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JADES Transient Survey (NIRCam Image) ✨
#Cosmology #DistantGalaxies #FirstGalaxies #Galaxies #GalaxyEvolution #GalaxyFormation
⏩ 2 new pictures from Webb (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=4&user=OptimusPrimeBot&ilshowall=1&offset=20240611103226
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JADES Transient Survey (NIRCam Image) ✨
#Cosmology #DistantGalaxies #FirstGalaxies #Galaxies #GalaxyEvolution #GalaxyFormation
⏩ 2 new pictures from Webb (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=4&user=OptimusPrimeBot&ilshowall=1&offset=20240611103226
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Galaxy JADES-GS-z14-0 Spectrum (NIRSpec) ✨
#DeepFields #DistantGalaxies #Galaxies #GalaxyEvolution #Survey
⏩ 2 new pictures from Webb (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=4&user=OptimusPrimeBot&ilshowall=1&offset=20240531103252
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Galaxy JADES-GS-z14-0 Spectrum (NIRSpec) ✨
#DeepFields #DistantGalaxies #Galaxies #GalaxyEvolution #Survey
⏩ 2 new pictures from Webb (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=4&user=OptimusPrimeBot&ilshowall=1&offset=20240531103252
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Galaxy JADES-GS-z14-0 Spectrum (NIRSpec) ✨
#DeepFields #DistantGalaxies #Galaxies #GalaxyEvolution #Survey
⏩ 2 new pictures from Webb (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=4&user=OptimusPrimeBot&ilshowall=1&offset=20240531103252
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Galaxy Forming in the Early Universe (Artist’s Concept) ✨
#Cosmology #DistantGalaxies #FirstGalaxies #Galaxies #GalaxyEvolution #GalaxyFormation
▶️ 1 new picture from Webb (NASA) https://commons.wikimedia.org/wiki/File:Galaxy_Forming_in_the_Early_Universe_%28Artist%E2%80%99s_Concept%29_%282024-114%29.tiff
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Galaxy Forming in the Early Universe (Artist’s Concept) ✨
#Cosmology #DistantGalaxies #FirstGalaxies #Galaxies #GalaxyEvolution #GalaxyFormation
▶️ 1 new picture from Webb (NASA) https://commons.wikimedia.org/wiki/File:Galaxy_Forming_in_the_Early_Universe_%28Artist%E2%80%99s_Concept%29_%282024-114%29.tiff
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Galaxy Forming in the Early Universe (Artist’s Concept) ✨
#Cosmology #DistantGalaxies #FirstGalaxies #Galaxies #GalaxyEvolution #GalaxyFormation
▶️ 1 new picture from Webb (NASA) https://commons.wikimedia.org/wiki/File:Galaxy_Forming_in_the_Early_Universe_%28Artist%E2%80%99s_Concept%29_%282024-114%29.tiff
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Monster galactic outflow powered by exploding stars - Enlarge / All galaxies have large amounts of gas that influence their s... - https://arstechnica.com/?p=2023554 #galaxyevolution #astrophysics #astronomy #science
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Monster galactic outflow powered by exploding stars - Enlarge / All galaxies have large amounts of gas that influence their s... - https://arstechnica.com/?p=2023554 #galaxyevolution #astrophysics #astronomy #science
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Monster galactic outflow powered by exploding stars - Enlarge / All galaxies have large amounts of gas that influence their s... - https://arstechnica.com/?p=2023554 #galaxyevolution #astrophysics #astronomy #science
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Portion of Cosmic Evolution Early Release Science (CEERS) Survey (NIRCam Compass Image) ✨
#DistantGalaxies #Galaxies #GalaxyEvolution #GalaxyFormation
⏩ 4 new pictures from Webb (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=7&user=OptimusPrimeBot&ilshowall=1&offset=20240118103343
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Portion of Cosmic Evolution Early Release Science (CEERS) Survey (NIRCam Compass Image) ✨
#DistantGalaxies #Galaxies #GalaxyEvolution #GalaxyFormation
⏩ 4 new pictures from Webb (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=7&user=OptimusPrimeBot&ilshowall=1&offset=20240118103343
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A new paper by Merrow et al. claims that, rather than a transient structure arising more recently through secular evolution, the Milky Way's bar may have resulted from its last major merger event some 8-11 Ga ago.
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A new paper by Merrow et al. claims that, rather than a transient structure arising more recently through secular evolution, the Milky Way's bar may have resulted from its last major merger event some 8-11 Ga ago.
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Cosmic Evolution Early Release Science (CEERS) Survey (NIRCam Compass Image) ✨
#ActiveGalaxies/Quasars #BlackHoles #DistantGalaxies #Galaxies #GalaxyEvolution #Miscellaneous #Observatories #Survey
⏩ 2 new pictures from Webb (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=2&user=OptimusPrimeBot&ilshowall=1&offset=20231204105122
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Cosmic Evolution Early Release Science (CEERS) Survey (NIRCam Compass Image) ✨
#ActiveGalaxies/Quasars #BlackHoles #DistantGalaxies #Galaxies #GalaxyEvolution #Miscellaneous #Observatories #Survey
⏩ 2 new pictures from Webb (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=2&user=OptimusPrimeBot&ilshowall=1&offset=20231204105122
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✨ 3 new pictures from Webb (NASA)
- El Gordo (NIRCam Compass Image)
- El Gordo (NIRCam Image)
- La Flaca and El Anzuelo (NIRCam Image)#Cosmology #DistantGalaxies #Galaxies #GalaxyClusters #GalaxyEvolution #GravitationalLensing
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According to Simulations, the Milky Way is One in a Million https://www.universetoday.com/159754/according-to-simulations-the-milky-way-is-one-in-a-million/ #cosmologicalsimulation #galaxyevolution #milkywaygalaxy #illustristng #cosmicwall #cosmology #galaxies #milkyway #mass
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According to Simulations, the Milky Way is One in a Million https://www.universetoday.com/159754/according-to-simulations-the-milky-way-is-one-in-a-million/ #cosmologicalsimulation #galaxyevolution #milkywaygalaxy #illustristng #cosmicwall #cosmology #galaxies #milkyway #mass
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Does anyone have a nice updated version of a "galaxies at different redshifts look different" graphic for 101-level? Preferably all images in the same rest frame band?
#Astronomy #Teaching #GalaxyEvolution #Redshift #Infrared -
Does anyone have a nice updated version of a "galaxies at different redshifts look different" graphic for 101-level? Preferably all images in the same rest frame band?
#Astronomy #Teaching #GalaxyEvolution #Redshift #Infrared -
💫 ERC funded researchers @KU_Leuven and @HITStudies joined forces & discovered a dormant #blackhole 9x the mass of our ☀️ in a neighbouring galaxy - Large Magellanic Cloud.
Discover more:
👉 https://bit.ly/3AeoKvN
@CORDIS_EU
#astrophysics #cosmology #galaxyevolution #supernova🐦🔗: https://nitter.eu/ERC_Research/status/1559521069173575680