#galaxy-cluster — Public Fediverse posts

https://www.europesays.com/ie/616137/ New Observations Reveal the Staggering Scale of the Universe’s Largest Galaxy #BrightestClusterGalaxy #Éire #GalaxyCluster #IE #Ireland #IsaacNewtonTelescope #Science #Space #WideFieldCamera

https://www.europesays.com/uk/1124787/ New Observations Reveal the Staggering Scale of the Universe’s Largest Galaxy #BrightestClusterGalaxy #GalaxyCluster #IsaacNewtonTelescope #Science #Space #UK #UnitedKingdom #WideFieldCamera

New Observations Reveal the Staggering Scale of the Universe’s Largest Galaxy

As new observations reveal the outer edges of IC 1101 for the first time, scientists have confirmed it…
#NewsBeep #News #Space #brightestclustergalaxy #galaxycluster #isaacnewtontelescope #Science #UK #UnitedKingdom #widefieldcamera
https://www.newsbeep.com/uk/723256/

https://www.europesays.com/ie/606825/ Hubble Spots Spiral Galaxy Warped by Cosmic Forces #Éire #esa #Galaxy #GalaxyCluster #Hubble #IE #IntermediateSpiralGalaxy #Ireland #nasa #NGC4639 #NGC4654 #RamPressureStripping #Science #SpiralGalaxy #VirgoCluster

#Simulation #TNG50: A #GalaxyCluster Forms
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap260726.html
https://apod.nasa.gov/image/2607/ClusterFormation_TNG50.mp4

#APOD

#Simulation #TNG50: A #GalaxyCluster Forms
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap260726.html
https://apod.nasa.gov/image/2607/ClusterFormation_TNG50.mp4

#APOD

#Simulation #TNG50: A #GalaxyCluster Forms
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap260726.html
https://apod.nasa.gov/image/2607/ClusterFormation_TNG50.mp4

#APOD

#Simulation #TNG50: A #GalaxyCluster Forms
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap260726.html
https://apod.nasa.gov/image/2607/ClusterFormation_TNG50.mp4

#APOD

#Simulation #TNG50: A #GalaxyCluster Forms
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap260726.html
https://apod.nasa.gov/image/2607/ClusterFormation_TNG50.mp4

#APOD

https://www.europesays.com/ie/537380/ Webb Delivers Strongest-Ever Case for ‘Black Hole Stars’ Lurking in Early Universe #AbellS1063 #BlackHole #BlackHoleStar #CSA #EarlyUniverse #Éire #esa #Galaxy #GalaxyCluster #GLIMPSE17775 #GravitationalLens #IE #Ireland #LittleRedDot #nasa #Science #Space #Spectrum #SupermassiveBlackHole #universe #Webb

APOD: 2026 June 5 – The Hydra Cluster of Galaxies

APOD: 2026 June 5 – The Hydra Cluster of Galaxies Discover the cosmos! Each day a different image…
#NewsBeep #News #Space #AU #Australia #ellipticalgalaxy #galaxycluster #Science #Spiralgalaxy
https://www.newsbeep.com/au/716601/

APOD: 2026 June 5 – The Hydra Cluster of Galaxies

APOD: 2026 June 5 – The Hydra Cluster of Galaxies Discover the cosmos! Each day a different image…
#NewsBeep #News #Space #AU #Australia #ellipticalgalaxy #galaxycluster #Science #Spiralgalaxy
https://www.newsbeep.com/au/716601/

APOD: 2026 June 5 – The Hydra Cluster of Galaxies

APOD: 2026 June 5 – The Hydra Cluster of Galaxies Discover the cosmos! Each day a different image…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Space #Ellipticalgalaxy #galaxycluster #Science #spiralgalaxy
https://www.newsbeep.com/us/685625/

APOD: 2026 June 5 – The Hydra Cluster of Galaxies

APOD: 2026 June 5 – The Hydra Cluster of Galaxies Discover the cosmos! Each day a different image…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Space #Ellipticalgalaxy #galaxycluster #Science #spiralgalaxy
https://www.newsbeep.com/us/685625/

https://www.europesays.com/ie/519829/ APOD: 2026 June 5 – The Hydra Cluster of Galaxies #Éire #EllipticalGalaxy #GalaxyCluster #IE #Ireland #Science #Space #SpiralGalaxy

https://www.europesays.com/uk/1006600/ APOD: 2026 June 5 – The Hydra Cluster of Galaxies #EllipticalGalaxy #GalaxyCluster #Science #Space #SpiralGalaxy #UK #UnitedKingdom

https://www.europesays.com/ie/514420/ Hubble Captures Active Spiral Galaxy: Messier 88 #ActiveGalacticNucleus #BlackHole #Éire #esa #Galaxy #GalaxyCluster #Hubble #IE #Ireland #M88 #Messier88 #nasa #NGC4501 #RamPressureStripping #Science #Space #SpiralGalaxy #SupermassiveBlackHole #VirgoCluster

https://www.europesays.com/ie/509234/ Webb Spots Supermassive Black Hole Older Than Its Home Galaxy #A2744QSO1 #Abell2744 #Abell2744QSO1 #BlackHole #CSA #EarlyUniverse #Éire #esa #Galaxy #GalaxyCluster #GravitationalLens #Hydrogen #IE #IR #Ireland #KeplerianMotion #LittleRedDot #Metallicity #nasa #Science #Space #SupermassiveBlackHole #universe #Webb

Webb Spots Supermassive Black Hole Older Than Its Home Galaxy

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have found an enormous black hole in the early Universe…
#NewsBeep #News #Science #A2744-QSO1 #Abell2744 #Abell2744-QSO1 #AU #Australia #Blackhole #CSA #EarlyUniverse #ESA #galaxy #galaxycluster #Gravitationallens #hydrogen #IR #Keplerianmotion #Littlereddot #Metallicity #NASA #supermassiveblackhole #Universe #Webb
https://www.newsbeep.com/au/701265/

Webb Spots Supermassive Black Hole Older Than Its Home Galaxy

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have found an enormous black hole in the early Universe…
#NewsBeep #News #Science #A2744-QSO1 #Abell2744 #Abell2744-QSO1 #AU #Australia #Blackhole #CSA #EarlyUniverse #ESA #galaxy #galaxycluster #Gravitationallens #hydrogen #IR #Keplerianmotion #Littlereddot #Metallicity #NASA #supermassiveblackhole #Universe #Webb
https://www.newsbeep.com/au/701265/

Deep Chandra X-Ray Observations of A2029 - The Merger History of a Relaxed, Strong Cool Core Cluster: https://iopscience.iop.org/article/10.3847/1538-4357/ae2026 -> #GalaxyCluster Relaxed Now, but was Wild in the Past: https://chandra.si.edu/photo/2026/a2029/

Deep Chandra X-Ray Observations of A2029 - The Merger History of a Relaxed, Strong Cool Core Cluster: https://iopscience.iop.org/article/10.3847/1538-4357/ae2026 -> #GalaxyCluster Relaxed Now, but was Wild in the Past: https://chandra.si.edu/photo/2026/a2029/

Deep Chandra X-Ray Observations of A2029 - The Merger History of a Relaxed, Strong Cool Core Cluster: https://iopscience.iop.org/article/10.3847/1538-4357/ae2026 -> #GalaxyCluster Relaxed Now, but was Wild in the Past: https://chandra.si.edu/photo/2026/a2029/

Deep Chandra X-Ray Observations of A2029 - The Merger History of a Relaxed, Strong Cool Core Cluster: https://iopscience.iop.org/article/10.3847/1538-4357/ae2026 -> #GalaxyCluster Relaxed Now, but was Wild in the Past: https://chandra.si.edu/photo/2026/a2029/

Deep Chandra X-Ray Observations of A2029 - The Merger History of a Relaxed, Strong Cool Core Cluster: https://iopscience.iop.org/article/10.3847/1538-4357/ae2026 -> #GalaxyCluster Relaxed Now, but was Wild in the Past: https://chandra.si.edu/photo/2026/a2029/

https://www.europesays.com/ie/485267/ Galaxy Cluster Abell 2029 Had Violent Past, Chandra Reveals #A2029 #Abell2029 #Chandra #Éire #Galaxy #GalaxyCluster #IE #Ireland #merger #nasa #Science #XRays

Astronomers spot 2 ‘time-warped’ supernovas whose light both has and hasn’t reached Earth

When you buy through links on our articles, Future and its syndication partners may earn a commission. The…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Space #ConorLarison #galaxycluster #ghostlyimages #gravitationallensing #HubbleSpaceTelescope #JamesWebbSpaceTelescope #multipleimages #Science #supernovas
https://www.newsbeep.com/us/442907/

Astronomers spot 2 ‘time-warped’ supernovas whose light both has and hasn’t reached Earth

When you buy through links on our articles, Future and its syndication partners may earn a commission. The…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Space #ConorLarison #galaxycluster #ghostlyimages #gravitationallensing #HubbleSpaceTelescope #JamesWebbSpaceTelescope #multipleimages #Science #supernovas
https://www.newsbeep.com/us/442907/

Astronomers spot 2 ‘time-warped’ supernovas whose light both has and hasn’t reached Earth

When you buy through links on our articles, Future and its syndication partners may earn a commission. The…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Space #ConorLarison #galaxycluster #ghostlyimages #gravitationallensing #HubbleSpaceTelescope #JamesWebbSpaceTelescope #multipleimages #Science #supernovas
https://www.newsbeep.com/us/442907/

Astronomers spot 2 ‘time-warped’ supernovas whose light both has and hasn’t reached Earth

When you buy through links on our articles, Future and its syndication partners may earn a commission. The…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Space #ConorLarison #galaxycluster #ghostlyimages #gravitationallensing #HubbleSpaceTelescope #JamesWebbSpaceTelescope #multipleimages #Science #supernovas
https://www.newsbeep.com/us/442907/

An X-ray-Emitting Proto-Cluster at z ≈ 5.7 Reveals Rapid Structure Growth: https://chandra.si.edu/photo/2026/protoc/paper_high_z_cluster_bogdan.pdf -> NASA Telescopes Spot Surprisingly Mature #GalaxyCluster in Early Universe: https://chandra.si.edu/press/26_releases/press_012826.html

An X-ray-Emitting Proto-Cluster at z ≈ 5.7 Reveals Rapid Structure Growth: https://chandra.si.edu/photo/2026/protoc/paper_high_z_cluster_bogdan.pdf -> NASA Telescopes Spot Surprisingly Mature #GalaxyCluster in Early Universe: https://chandra.si.edu/press/26_releases/press_012826.html

An X-ray-Emitting Proto-Cluster at z ≈ 5.7 Reveals Rapid Structure Growth: https://chandra.si.edu/photo/2026/protoc/paper_high_z_cluster_bogdan.pdf -> NASA Telescopes Spot Surprisingly Mature #GalaxyCluster in Early Universe: https://chandra.si.edu/press/26_releases/press_012826.html

An X-ray-Emitting Proto-Cluster at z ≈ 5.7 Reveals Rapid Structure Growth: https://chandra.si.edu/photo/2026/protoc/paper_high_z_cluster_bogdan.pdf -> NASA Telescopes Spot Surprisingly Mature #GalaxyCluster in Early Universe: https://chandra.si.edu/press/26_releases/press_012826.html

An X-ray-Emitting Proto-Cluster at z ≈ 5.7 Reveals Rapid Structure Growth: https://chandra.si.edu/photo/2026/protoc/paper_high_z_cluster_bogdan.pdf -> NASA Telescopes Spot Surprisingly Mature #GalaxyCluster in Early Universe: https://chandra.si.edu/press/26_releases/press_012826.html

CANUCS/Technicolor Data Release - Imaging, Photometry, Slit Spectroscopy, and Stellar Population Parameters: https://iopscience.iop.org/article/10.3847/1538-4365/ae1611 -> #GalaxyCluster in Technicolor: https://aasnova.org/2026/01/12/featured-image-galaxy-cluster-in-technicolor/

CANUCS/Technicolor Data Release - Imaging, Photometry, Slit Spectroscopy, and Stellar Population Parameters: https://iopscience.iop.org/article/10.3847/1538-4365/ae1611 -> #GalaxyCluster in Technicolor: https://aasnova.org/2026/01/12/featured-image-galaxy-cluster-in-technicolor/

CANUCS/Technicolor Data Release - Imaging, Photometry, Slit Spectroscopy, and Stellar Population Parameters: https://iopscience.iop.org/article/10.3847/1538-4365/ae1611 -> #GalaxyCluster in Technicolor: https://aasnova.org/2026/01/12/featured-image-galaxy-cluster-in-technicolor/

CANUCS/Technicolor Data Release - Imaging, Photometry, Slit Spectroscopy, and Stellar Population Parameters: https://iopscience.iop.org/article/10.3847/1538-4365/ae1611 -> #GalaxyCluster in Technicolor: https://aasnova.org/2026/01/12/featured-image-galaxy-cluster-in-technicolor/

CANUCS/Technicolor Data Release - Imaging, Photometry, Slit Spectroscopy, and Stellar Population Parameters: https://iopscience.iop.org/article/10.3847/1538-4365/ae1611 -> #GalaxyCluster in Technicolor: https://aasnova.org/2026/01/12/featured-image-galaxy-cluster-in-technicolor/

https://www.europesays.com/uk/678997/ Scientists Discover Impossible Object in Deep Space #DalhousieUniversity #GalaxyCluster #Science #ScottChapman #Space #UK #UnitedKingdom

Scientists Discover Impossible Object in Deep Space

While peering into some of the oldest regions of the known universe — dating back to just 1.4…
#NewsBeep #News #Space #AU #Australia #DalhousieUniversity #galaxycluster #Science #ScottChapman
https://www.newsbeep.com/au/396396/

Scientists Discover Impossible Object in Deep Space

While peering into some of the oldest regions of the known universe — dating back to just 1.4…
#NewsBeep #News #Space #DalhousieUniversity #galaxycluster #Science #ScottChapman #UK #UnitedKingdom
https://www.newsbeep.com/uk/356189/

Scientists Discover Impossible Object in Deep Space

While peering into some of the oldest regions of the known universe — dating back to just 1.4…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Space #DalhousieUniversity #galaxycluster #Science #ScottChapman
https://www.newsbeep.com/us/392005/

Scientists Discover Impossible Object in Deep Space

While peering into some of the oldest regions of the known universe — dating back to just 1.4…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Space #DalhousieUniversity #galaxycluster #Science #ScottChapman
https://www.newsbeep.com/us/392005/

https://www.europesays.com/ie/271090/ Scientists Discover Impossible Object in Deep Space #DalhousieUniversity #Éire #GalaxyCluster #IE #Ireland #Science #ScottChapman #Space

Sunyaev–Zeldovich detection of hot intracluster gas at redshift 4.3: https://www.nature.com/articles/s41586-025-09901-3.epdf?sharing_token=NfWs_ojF_1OmLJTaiZ6CTNRgN0jAjWel9jnR3ZoTv0OMMxRMBI4MV6qYsuTyKatnPL939KgCe2QhxaUV94eHfgY4r7HMEe89QKD_HfVAh5P-YyrpVQ-BgGUS-HjTSTYrBdyY833CkrYg_EEdZD-l-bREZbiASmBa1DenABD0eK0%3D -> Weird clump in the early universe is piping hot and we don’t know why: https://www.newscientist.com/article/2509976-weird-clump-in-the-early-universe-is-piping-hot-and-we-dont-know-why/ - a #GalaxyCluster in the early universe is 10 times hotter than it ought to be, which may reshape how we think these enormous structures formed.

Sunyaev–Zeldovich detection of hot intracluster gas at redshift 4.3: https://www.nature.com/articles/s41586-025-09901-3.epdf?sharing_token=NfWs_ojF_1OmLJTaiZ6CTNRgN0jAjWel9jnR3ZoTv0OMMxRMBI4MV6qYsuTyKatnPL939KgCe2QhxaUV94eHfgY4r7HMEe89QKD_HfVAh5P-YyrpVQ-BgGUS-HjTSTYrBdyY833CkrYg_EEdZD-l-bREZbiASmBa1DenABD0eK0%3D -> Weird clump in the early universe is piping hot and we don’t know why: https://www.newscientist.com/article/2509976-weird-clump-in-the-early-universe-is-piping-hot-and-we-dont-know-why/ - a #GalaxyCluster in the early universe is 10 times hotter than it ought to be, which may reshape how we think these enormous structures formed.

Sunyaev–Zeldovich detection of hot intracluster gas at redshift 4.3: https://www.nature.com/articles/s41586-025-09901-3.epdf?sharing_token=NfWs_ojF_1OmLJTaiZ6CTNRgN0jAjWel9jnR3ZoTv0OMMxRMBI4MV6qYsuTyKatnPL939KgCe2QhxaUV94eHfgY4r7HMEe89QKD_HfVAh5P-YyrpVQ-BgGUS-HjTSTYrBdyY833CkrYg_EEdZD-l-bREZbiASmBa1DenABD0eK0%3D -> Weird clump in the early universe is piping hot and we don’t know why: https://www.newscientist.com/article/2509976-weird-clump-in-the-early-universe-is-piping-hot-and-we-dont-know-why/ - a #GalaxyCluster in the early universe is 10 times hotter than it ought to be, which may reshape how we think these enormous structures formed.

Sunyaev–Zeldovich detection of hot intracluster gas at redshift 4.3: https://www.nature.com/articles/s41586-025-09901-3.epdf?sharing_token=NfWs_ojF_1OmLJTaiZ6CTNRgN0jAjWel9jnR3ZoTv0OMMxRMBI4MV6qYsuTyKatnPL939KgCe2QhxaUV94eHfgY4r7HMEe89QKD_HfVAh5P-YyrpVQ-BgGUS-HjTSTYrBdyY833CkrYg_EEdZD-l-bREZbiASmBa1DenABD0eK0%3D -> Weird clump in the early universe is piping hot and we don’t know why: https://www.newscientist.com/article/2509976-weird-clump-in-the-early-universe-is-piping-hot-and-we-dont-know-why/ - a #GalaxyCluster in the early universe is 10 times hotter than it ought to be, which may reshape how we think these enormous structures formed.

Sunyaev–Zeldovich detection of hot intracluster gas at redshift 4.3: https://www.nature.com/articles/s41586-025-09901-3.epdf?sharing_token=NfWs_ojF_1OmLJTaiZ6CTNRgN0jAjWel9jnR3ZoTv0OMMxRMBI4MV6qYsuTyKatnPL939KgCe2QhxaUV94eHfgY4r7HMEe89QKD_HfVAh5P-YyrpVQ-BgGUS-HjTSTYrBdyY833CkrYg_EEdZD-l-bREZbiASmBa1DenABD0eK0%3D -> Weird clump in the early universe is piping hot and we don’t know why: https://www.newscientist.com/article/2509976-weird-clump-in-the-early-universe-is-piping-hot-and-we-dont-know-why/ - a #GalaxyCluster in the early universe is 10 times hotter than it ought to be, which may reshape how we think these enormous structures formed.

https://www.europesays.com/ie/264838/ Champagne Cluster is Actually Two Galaxy Clusters in Process of Merging, Astronomers Find #ChampagneCluster #Chandra #Éire #esa #Galaxy #GalaxyCluster #IE #Ireland #KeckObservatory #merger #nasa #Science #Space #XRays #XMMNewton

Discovery and Multiwavelength Analysis of a New Dissociative #GalaxyCluster Merger - The Champagne Cluster: https://iopscience.iop.org/article/10.3847/1538-4357/ade67c -> NASA's Chandra Rings in New Year With Champagne Cluster: https://chandra.harvard.edu/photo/2025/champagne/

Discovery and Multiwavelength Analysis of a New Dissociative #GalaxyCluster Merger - The Champagne Cluster: https://iopscience.iop.org/article/10.3847/1538-4357/ade67c -> NASA's Chandra Rings in New Year With Champagne Cluster: https://chandra.harvard.edu/photo/2025/champagne/

Discovery and Multiwavelength Analysis of a New Dissociative #GalaxyCluster Merger - The Champagne Cluster: https://iopscience.iop.org/article/10.3847/1538-4357/ade67c -> NASA's Chandra Rings in New Year With Champagne Cluster: https://chandra.harvard.edu/photo/2025/champagne/

Discovery and Multiwavelength Analysis of a New Dissociative #GalaxyCluster Merger - The Champagne Cluster: https://iopscience.iop.org/article/10.3847/1538-4357/ade67c -> NASA's Chandra Rings in New Year With Champagne Cluster: https://chandra.harvard.edu/photo/2025/champagne/

Discovery and Multiwavelength Analysis of a New Dissociative #GalaxyCluster Merger - The Champagne Cluster: https://iopscience.iop.org/article/10.3847/1538-4357/ade67c -> NASA's Chandra Rings in New Year With Champagne Cluster: https://chandra.harvard.edu/photo/2025/champagne/

https://www.europesays.com/ie/143921/ Listen to The Creepy ‘Sounds’ From A Black Hole, Captured by NASA #BlackHole #Éire #GalaxyCluster #IE #Ireland #nasa #PerseusCluster #Science #SoundWaves #Space #supermassive

Weekly Update from the Open Journal of Astrophysics – 04/10/2025

It’s Saturday again, so it’s time for a summary of the week’s new papers at the Open Journal of Astrophysics. Since the last update we have published five more papers, which brings the number in Volume 8 (2025) up to 146, and the total so far published by OJAp up to 381. At this rate Volume 8 will contain around 190 by the end of 2025.

Anyway, here are this week’s papers, starting with three published on Monday 29th September 2025.

The first paper is “Cosmic Multipoles in Galaxy Surveys II: Comparing Different Methods in Assessing the Cosmic Dipole” by Vasudev Mittal, Oliver T. Oayda and Geraint F. Lewis (U. Sydney, Australia). This is in the folder Cosmology and Nongalactic Astrophysics. It presents a comparison of methods for determining the number count dipole from cosmological surveys with a discussion of the implications for the known discordance with the CMB diple.

The overlay is here:

You can make this larger by clicking on it.  The officially accepted version of this paper can be found on the arXiv here.

The second paper this week, also published on Monday 29th September, is “SDSS-C4 3028: the Nearest Blue Galaxy Cluster Devoid of an Intracluster Medium” by Shweta Jain (University of Kentucky, USA) and 11 others based in the USA, Australia and Korea. This describes a galaxy cluster with an unusually high fraction (about 63%) of star-forming galaxies which may be a result of ram pressure stripping; the article is in the folder Astrophysics of Galaxies.

The corresponding overlay is here:

You can find the officially accepted version on arXiv here.

The third one this week, published on also published on Monday 29th September but in the folder Earth and Planetary Astrophysics, is “Comparing the Architectures of Multiplanet Systems from Kepler, K2, and TESS Data” by Robert L Royer and Jason H. Steffen (University of Nevada, USA).  This paper explores the trends seen in exoplanet survey data, including Kepler, TESS, and K2 including many planetary systems with multiple planets.

The overlay is here:

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

The next one up is “Seeding Cores: A Pathway for Nuclear Star Clusters from Bound Star Clusters in the First Billion Years” by Fred Angelo Batan Garcia (Columbia University, USA), Massimo Ricotti (University of Maryland, USA) and Kazuyuki Sugimura (Hokkaido University, Japan). This paper was published on Thursday 2nd October in the folder Astrophysics of Galaxies. This is about modelling the formation of Nuclear Star Clusters using cosmological radiation-hydrodynamic simulations, with discussion of the implications for seeding supermassive black holes and the little red dots seen by JWST.

The corresponding overlay is here:

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

The fifth and last one for this week, published on Friday 3rd October 2025, is “Efficient semi-analytic modelling of Pop III star formation from Cosmic Dawn to Reionization” by Sahil Hegde and Steven R. Furlanetto (University of Californi Los Angeles, USA).  This is also in the folder marked Astrophysics of Galaxies. It uses a self-consistent analytic model to trace the formation of the first stars from their birth through the first billion years of the universe’s history. complementing semi-analytic and computational methods.

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

That concludes the report for this week. I’ll post another update next Saturday.

#arXiv250308779v2 #arXiv250620654v3 #arXiv250719581v2 #arXiv250920651v1 #arXiv250922523v1 #AstrophysicsOfGalaxies #cosmicDipoles #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #EarthAndPlanetaryAstrophysics #GalaxyCluster #galaxyFormation #galaxySurveys #JWST #Kepler #LittleRedDots #MultiplanetSystems #nuclearStarClusters #OpenAccessPublishing #OpenJournalOfAstrophysics #PopulationIIIStars #ramPressureStripping #SDSSC42028 #semiAnalyticGalaxyFormation #TheOpenJournalOfAstrophysics

Weekly Update from the Open Journal of Astrophysics – 04/10/2025

It’s Saturday again, so it’s time for a summary of the week’s new papers at the Open Journal of Astrophysics. Since the last update we have published five more papers, which brings the number in Volume 8 (2025) up to 146, and the total so far published by OJAp up to 381. At this rate Volume 8 will contain around 190 by the end of 2025.

Anyway, here are this week’s papers, starting with three published on Monday 29th September 2025.

The first paper is “Cosmic Multipoles in Galaxy Surveys II: Comparing Different Methods in Assessing the Cosmic Dipole” by Vasudev Mittal, Oliver T. Oayda and Geraint F. Lewis (U. Sydney, Australia). This is in the folder Cosmology and Nongalactic Astrophysics. It presents a comparison of methods for determining the number count dipole from cosmological surveys with a discussion of the implications for the known discordance with the CMB diple.

The overlay is here:

You can make this larger by clicking on it.  The officially accepted version of this paper can be found on the arXiv here.

The second paper this week, also published on Monday 29th September, is “SDSS-C4 3028: the Nearest Blue Galaxy Cluster Devoid of an Intracluster Medium” by Shweta Jain (University of Kentucky, USA) and 11 others based in the USA, Australia and Korea. This describes a galaxy cluster with an unusually high fraction (about 63%) of star-forming galaxies which may be a result of ram pressure stripping; the article is in the folder Astrophysics of Galaxies.

The corresponding overlay is here:

You can find the officially accepted version on arXiv here.

The third one this week, published on also published on Monday 29th September but in the folder Earth and Planetary Astrophysics, is “Comparing the Architectures of Multiplanet Systems from Kepler, K2, and TESS Data” by Robert L Royer and Jason H. Steffen (University of Nevada, USA).  This paper explores the trends seen in exoplanet survey data, including Kepler, TESS, and K2 including many planetary systems with multiple planets.

The overlay is here:

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

The next one up is “Seeding Cores: A Pathway for Nuclear Star Clusters from Bound Star Clusters in the First Billion Years” by Fred Angelo Batan Garcia (Columbia University, USA), Massimo Ricotti (University of Maryland, USA) and Kazuyuki Sugimura (Hokkaido University, Japan). This paper was published on Thursday 2nd October in the folder Astrophysics of Galaxies. This is about modelling the formation of Nuclear Star Clusters using cosmological radiation-hydrodynamic simulations, with discussion of the implications for seeding supermassive black holes and the little red dots seen by JWST.

The corresponding overlay is here:

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

The fifth and last one for this week, published on Friday 3rd October 2025, is “Efficient semi-analytic modelling of Pop III star formation from Cosmic Dawn to Reionization” by Sahil Hegde and Steven R. Furlanetto (University of Californi Los Angeles, USA).  This is also in the folder marked Astrophysics of Galaxies. It uses a self-consistent analytic model to trace the formation of the first stars from their birth through the first billion years of the universe’s history. complementing semi-analytic and computational methods.

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

That concludes the report for this week. I’ll post another update next Saturday.

#arXiv250308779v2 #arXiv250620654v3 #arXiv250719581v2 #arXiv250920651v1 #arXiv250922523v1 #AstrophysicsOfGalaxies #cosmicDipoles #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #EarthAndPlanetaryAstrophysics #GalaxyCluster #galaxyFormation #galaxySurveys #JWST #Kepler #LittleRedDots #MultiplanetSystems #nuclearStarClusters #OpenAccessPublishing #OpenJournalOfAstrophysics #PopulationIIIStars #ramPressureStripping #SDSSC42028 #semiAnalyticGalaxyFormation #TheOpenJournalOfAstrophysics