#galaxy-clusters — Public Fediverse posts

Galaxy Clusters Selected via the Sunyaev-Zel'dovich Effect in 5 year data from the SPT-3G Main Survey: https://arxiv.org/abs/2607.01175 -> South Pole Telescope analysis yields catalog of more than 7000 #GalaxyClusters: https://www.anl.gov/article/south-pole-telescope-analysis-yields-catalog-of-more-than-7000-galaxy-clusters - new cosmic census, detailed by lead co-authors from Argonne, is based on five years of data.

Galaxy Clusters Selected via the Sunyaev-Zel'dovich Effect in 5 year data from the SPT-3G Main Survey: https://arxiv.org/abs/2607.01175 -> South Pole Telescope analysis yields catalog of more than 7000 #GalaxyClusters: https://www.anl.gov/article/south-pole-telescope-analysis-yields-catalog-of-more-than-7000-galaxy-clusters - new cosmic census, detailed by lead co-authors from Argonne, is based on five years of data.

Galaxy Clusters Selected via the Sunyaev-Zel'dovich Effect in 5 year data from the SPT-3G Main Survey: https://arxiv.org/abs/2607.01175 -> South Pole Telescope analysis yields catalog of more than 7000 #GalaxyClusters: https://www.anl.gov/article/south-pole-telescope-analysis-yields-catalog-of-more-than-7000-galaxy-clusters - new cosmic census, detailed by lead co-authors from Argonne, is based on five years of data.

Galaxy Clusters Selected via the Sunyaev-Zel'dovich Effect in 5 year data from the SPT-3G Main Survey: https://arxiv.org/abs/2607.01175 -> South Pole Telescope analysis yields catalog of more than 7000 #GalaxyClusters: https://www.anl.gov/article/south-pole-telescope-analysis-yields-catalog-of-more-than-7000-galaxy-clusters - new cosmic census, detailed by lead co-authors from Argonne, is based on five years of data.

Galaxy Clusters Selected via the Sunyaev-Zel'dovich Effect in 5 year data from the SPT-3G Main Survey: https://arxiv.org/abs/2607.01175 -> South Pole Telescope analysis yields catalog of more than 7000 #GalaxyClusters: https://www.anl.gov/article/south-pole-telescope-analysis-yields-catalog-of-more-than-7000-galaxy-clusters - new cosmic census, detailed by lead co-authors from Argonne, is based on five years of data.

New in the #VirtualObservatory: “ACO 746 analysis with Subaru & MMT spectra data” by HyeongHan K. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/962/100
#GalaxyClusters #Spectroscopy #Galaxies #GravitationalLensing

New in the #VirtualObservatory: “FRIs and FRIIs in LoTSS DR2 with galaxy clusters” by Pan T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/710/A326
#GalaxyClusters #ActiveGalacticNuclei #RadioGalaxies

New in the #VirtualObservatory: “Galaxy clusters in the LoTSS-DR3” by Stuardi C. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/710/A219
#Surveys #AstronomicalObjectIdentification #GalaxyClusters

New in the #VirtualObservatory: “Coma Cluster DESI galaxies” by Pedratti S. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/710/A218
#Galaxies #VisibleAstronomy #GalaxyClusters #Photometry

New in the #VirtualObservatory: “JWST Bullet Cluster redshifts and spectra” by Rihtarsic G. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/710/A207
#GravitationalLensing #GalaxyClusters #InfraredAstronomy #Redshifted

https://www.europesays.com/ie/557103/ Strange glowing ‘bow-and-arrow’ structure may be a giant cosmic shock wave created by a supersonic galaxy c… #BowShock #CitizenScientist #Éire #GalaxyClusters #IE #Ireland #LOFAR #RadioFrequencies #RadioGalaxy #RadioSurveys #RadioTelescope #RoyalAstronomicalSociety #Science

New in the #VirtualObservatory: “CAMIRA clusters in the eFEDS field” by Nguyen-Dang N.T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/710/A202
#GalaxyClassificationSystems #GalaxyClusters #XRaySources

New in the #VirtualObservatory: “Wide-sep. lensed QSOs + dual-QSO cand. from CatNorth” by Wu D. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/710/A180
#GravitationalLensing #VisibleAstronomy #Quasars #GalaxyClusters

https://www.europesays.com/ie/544705/ Hubble Glimpses Merging Galaxy Clusters #astrophysics #AstrophysicsDivision #Éire #Galaxies #GalaxyClusters #GoddardSpaceFlightCenter #HubbleSpaceTelescope #IE #Ireland #Science #Space #TheUniverse

Weekly Update from the Open Journal of Astrophysics 13/06/2026

It’s Saturday again so it’s 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 122 and the total so far published by OJAp up to 570.

I will continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

The first paper to report this week, published on Thursday 11th June, is “Dancing Streams In Merging Halos: Stellar Streams in a MW–LMC-like merger” by (all based in the USA): Sachi Weerasooriya (Carnegie Observatories), Tjitske Starkenburg (Northwestern U.), Emily C. Cunningham (Columbia U.) & Kathryn V. Johnston (Flatiron Institute). This article explores how galaxy mergers, like the Milky Way-Large Magellanic Cloud merger, significantly alter the properties and structures of stellar streams, challenging the recovery of their initial orbits. It is in the folder marked Astrophysics of Galaxies.

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/116730200889106529

The second paper for this week, also published on Thursday 11th June but in the folder Cosmology and Nongalactic Astrophysics is “X-SORTER (X-ray Survey Of meRging clusTErs in Redmapper): X-ray and Spectroscopic Characterization of 12 Optically Selected Galaxy Cluster Merger Candidates” by Christopher Hopp, David Wittman, Rodrigo Stancioli, Zhuoran Gao & Faik Bouhrik (UC Davis) and Scott Adler (Rochester), all based in the USA. The X-SORTER program identifies merging galaxy clusters to study dark matter interactions, using optical indicators and X-ray observations. This method efficiently identifies active clusters suitable for detailed dark matter studies.

The overlay for this one looks like this:

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

https://fediscience.org/@OJ_Astro/116730279994960097

The third and final paper of the week, published on Friday 12th June in the folder Earth and Planetary Astrophysics, is “JCMT Constraints on the Early-Time HCN and CO Emission and HCN Temporal Evolution of 3I/ATLAS” by Jason T. Hinkle (U. Illinois, USA) and 6 others based in the USA and Chile. This article presents observations of the third Interstellar Object, 3I/ATLAS, providing early sub-mm constraints on its activity. The findings suggest a steeper production rate slope than typical Solar System comets.

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/116735805179724489

And that concludes this week’s update. It has been a slow week on the publishing front, but the main reason is that we have a big backlog of papers accepted but waiting for the authors to put their final versions on arXiv and we can’t do anything about that! I’ll do another update next Saturday.

Weekly Update from the Open Journal of Astrophysics 13/06/2026

It’s Saturday again so it’s 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 122 and the total so far published by OJAp up to 570.

I will continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

The first paper to report this week, published on Thursday 11th June, is “Dancing Streams In Merging Halos: Stellar Streams in a MW–LMC-like merger” by (all based in the USA): Sachi Weerasooriya (Carnegie Observatories), Tjitske Starkenburg (Northwestern U.), Emily C. Cunningham (Columbia U.) & Kathryn V. Johnston (Flatiron Institute). This article explores how galaxy mergers, like the Milky Way-Large Magellanic Cloud merger, significantly alter the properties and structures of stellar streams, challenging the recovery of their initial orbits. It is in the folder marked Astrophysics of Galaxies.

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/116730200889106529

The second paper for this week, also published on Thursday 11th June but in the folder Cosmology and Nongalactic Astrophysics is “X-SORTER (X-ray Survey Of meRging clusTErs in Redmapper): X-ray and Spectroscopic Characterization of 12 Optically Selected Galaxy Cluster Merger Candidates” by Christopher Hopp, David Wittman, Rodrigo Stancioli, Zhuoran Gao & Faik Bouhrik (UC Davis) and Scott Adler (Rochester), all based in the USA. The X-SORTER program identifies merging galaxy clusters to study dark matter interactions, using optical indicators and X-ray observations. This method efficiently identifies active clusters suitable for detailed dark matter studies.

The overlay for this one looks like this:

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

https://fediscience.org/@OJ_Astro/116730279994960097

The third and final paper of the week, published on Friday 12th June in the folder Earth and Planetary Astrophysics, is “JCMT Constraints on the Early-Time HCN and CO Emission and HCN Temporal Evolution of 3I/ATLAS” by Jason T. Hinkle (U. Illinois, USA) and 6 others based in the USA and Chile. This article presents observations of the third Interstellar Object, 3I/ATLAS, providing early sub-mm constraints on its activity. The findings suggest a steeper production rate slope than typical Solar System comets.

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/116735805179724489

And that concludes this week’s update. It has been a slow week on the publishing front, but the main reason is that we have a big backlog of papers accepted but waiting for the authors to put their final versions on arXiv and we can’t do anything about that! I’ll do another update next Saturday.

Weekly Update from the Open Journal of Astrophysics 13/06/2026

It’s Saturday again so it’s 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 122 and the total so far published by OJAp up to 570.

I will continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

The first paper to report this week, published on Thursday 11th June, is “Dancing Streams In Merging Halos: Stellar Streams in a MW–LMC-like merger” by (all based in the USA): Sachi Weerasooriya (Carnegie Observatories), Tjitske Starkenburg (Northwestern U.), Emily C. Cunningham (Columbia U.) & Kathryn V. Johnston (Flatiron Institute). This article explores how galaxy mergers, like the Milky Way-Large Magellanic Cloud merger, significantly alter the properties and structures of stellar streams, challenging the recovery of their initial orbits. It is in the folder marked Astrophysics of Galaxies.

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/116730200889106529

The second paper for this week, also published on Thursday 11th June but in the folder Cosmology and Nongalactic Astrophysics is “X-SORTER (X-ray Survey Of meRging clusTErs in Redmapper): X-ray and Spectroscopic Characterization of 12 Optically Selected Galaxy Cluster Merger Candidates” by Christopher Hopp, David Wittman, Rodrigo Stancioli, Zhuoran Gao & Faik Bouhrik (UC Davis) and Scott Adler (Rochester), all based in the USA. The X-SORTER program identifies merging galaxy clusters to study dark matter interactions, using optical indicators and X-ray observations. This method efficiently identifies active clusters suitable for detailed dark matter studies.

The overlay for this one looks like this:

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

https://fediscience.org/@OJ_Astro/116730279994960097

The third and final paper of the week, published on Friday 12th June in the folder Earth and Planetary Astrophysics, is “JCMT Constraints on the Early-Time HCN and CO Emission and HCN Temporal Evolution of 3I/ATLAS” by Jason T. Hinkle (U. Illinois, USA) and 6 others based in the USA and Chile. This article presents observations of the third Interstellar Object, 3I/ATLAS, providing early sub-mm constraints on its activity. The findings suggest a steeper production rate slope than typical Solar System comets.

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/116735805179724489

And that concludes this week’s update. It has been a slow week on the publishing front, but the main reason is that we have a big backlog of papers accepted but waiting for the authors to put their final versions on arXiv and we can’t do anything about that! I’ll do another update next Saturday.

Weekly Update from the Open Journal of Astrophysics 13/06/2026

It’s Saturday again so it’s 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 122 and the total so far published by OJAp up to 570.

I will continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

The first paper to report this week, published on Thursday 11th June, is “Dancing Streams In Merging Halos: Stellar Streams in a MW–LMC-like merger” by (all based in the USA): Sachi Weerasooriya (Carnegie Observatories), Tjitske Starkenburg (Northwestern U.), Emily C. Cunningham (Columbia U.) & Kathryn V. Johnston (Flatiron Institute). This article explores how galaxy mergers, like the Milky Way-Large Magellanic Cloud merger, significantly alter the properties and structures of stellar streams, challenging the recovery of their initial orbits. It is in the folder marked Astrophysics of Galaxies.

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/116730200889106529

The second paper for this week, also published on Thursday 11th June but in the folder Cosmology and Nongalactic Astrophysics is “X-SORTER (X-ray Survey Of meRging clusTErs in Redmapper): X-ray and Spectroscopic Characterization of 12 Optically Selected Galaxy Cluster Merger Candidates” by Christopher Hopp, David Wittman, Rodrigo Stancioli, Zhuoran Gao & Faik Bouhrik (UC Davis) and Scott Adler (Rochester), all based in the USA. The X-SORTER program identifies merging galaxy clusters to study dark matter interactions, using optical indicators and X-ray observations. This method efficiently identifies active clusters suitable for detailed dark matter studies.

The overlay for this one looks like this:

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

https://fediscience.org/@OJ_Astro/116730279994960097

The third and final paper of the week, published on Friday 12th June in the folder Earth and Planetary Astrophysics, is “JCMT Constraints on the Early-Time HCN and CO Emission and HCN Temporal Evolution of 3I/ATLAS” by Jason T. Hinkle (U. Illinois, USA) and 6 others based in the USA and Chile. This article presents observations of the third Interstellar Object, 3I/ATLAS, providing early sub-mm constraints on its activity. The findings suggest a steeper production rate slope than typical Solar System comets.

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/116735805179724489

And that concludes this week’s update. It has been a slow week on the publishing front, but the main reason is that we have a big backlog of papers accepted but waiting for the authors to put their final versions on arXiv and we can’t do anything about that! I’ll do another update next Saturday.

Weekly Update from the Open Journal of Astrophysics 13/06/2026

It’s Saturday again so it’s 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 122 and the total so far published by OJAp up to 570.

I will continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

The first paper to report this week, published on Thursday 11th June, is “Dancing Streams In Merging Halos: Stellar Streams in a MW–LMC-like merger” by (all based in the USA): Sachi Weerasooriya (Carnegie Observatories), Tjitske Starkenburg (Northwestern U.), Emily C. Cunningham (Columbia U.) & Kathryn V. Johnston (Flatiron Institute). This article explores how galaxy mergers, like the Milky Way-Large Magellanic Cloud merger, significantly alter the properties and structures of stellar streams, challenging the recovery of their initial orbits. It is in the folder marked Astrophysics of Galaxies.

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/116730200889106529

The second paper for this week, also published on Thursday 11th June but in the folder Cosmology and Nongalactic Astrophysics is “X-SORTER (X-ray Survey Of meRging clusTErs in Redmapper): X-ray and Spectroscopic Characterization of 12 Optically Selected Galaxy Cluster Merger Candidates” by Christopher Hopp, David Wittman, Rodrigo Stancioli, Zhuoran Gao & Faik Bouhrik (UC Davis) and Scott Adler (Rochester), all based in the USA. The X-SORTER program identifies merging galaxy clusters to study dark matter interactions, using optical indicators and X-ray observations. This method efficiently identifies active clusters suitable for detailed dark matter studies.

The overlay for this one looks like this:

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

https://fediscience.org/@OJ_Astro/116730279994960097

The third and final paper of the week, published on Friday 12the June in the folder Earth and Planetary Astrophysics, is “JCMT Constraints on the Early-Time HCN and CO Emission and HCN Temporal Evolution of 3I/ATLAS” by Jason T. Hinkle (U. Illinois, USA) and 6 others based in the USA and Chile. This article presents observations of the third Interstellar Object, 3I/ATLAS, providing early sub-mm constraints on its activity. The findings suggest a steeper production rate slope than typical Solar System comets.

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/116735805179724489

And that concludes this week’s update. It has been a slow week on the publishing front, but the main reason is that we have a big backlog of papers accepted but waiting for the authors to put their final versions on arXiv and we can’t do anything about that! I’ll do another update next Saturday.

https://www.europesays.com/ie/?p=532034 Hubble Sees Swarm of Galaxies #astrophysics #AstrophysicsDivision #Éire #Galaxies #GalaxyClusters #GoddardSpaceFlightCenter #HubbleSpaceTelescope #IE #Ireland #Science #Space #TheUniverse

New in the #VirtualObservatory: “X-CLASS low z groups and galaxy clusters” by Moysan Q. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/710/A77
#GalaxyClusters #Redshifted #XRaySources

New in the #VirtualObservatory: “4 HFF clusters members structural parameters” by Granata G. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/709/A254
#GalaxyClusters #GalaxyClassificationSystems #HstPhotometry

New in the #VirtualObservatory: “ALMA Lensing Cluster Survey (ALCS) 1.2mm” by Fujimoto S. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/275/36
#GalaxyClusters #MillimeterAstronomy #SubmillimeterAstronomy #Surveys

A #Collision of #GalaxyClusters
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap260521.html

#APOD

A #Collision of #GalaxyClusters
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap260521.html

#APOD

A #Collision of #GalaxyClusters
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap260521.html

#APOD

A #Collision of #GalaxyClusters
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap260521.html

#APOD

A #Collision of #GalaxyClusters
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap260521.html

#APOD

New in the #VirtualObservatory: “Spectroscopic redshift survey of the Coma cluster” by Kang W. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/278/51
#Surveys #GalaxyClusters #VisibleAstronomy #Spectroscopy

New in the #VirtualObservatory: “Extended cluster radio sources catalog” by van der Jagt S. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/699/A66
#Redshifted #ActiveGalacticNuclei #RadioGalaxies #GalaxyClusters

Dark Matter: Scientists tested Newton’s Law across 750 million light-years: Does gravity still work as Newton predicted?

It’s been more than three centuries since Isaac Newton …
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #bigbang #CosmicDistances #cosmicmicrowavebackground #Darkmatter #Einstein'sTheoryofGeneralRelativity #Galaxyclusters #gravitationalpull #ModifiedNewtonianDynamics(MOND) #Newton'sLawofGravitation #Science
https://www.newsbeep.com/us/634550/

Dark Matter: Scientists tested Newton’s Law across 750 million light-years: Does gravity still work as Newton predicted?

It’s been more than three centuries since Isaac Newton …
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #bigbang #CosmicDistances #cosmicmicrowavebackground #Darkmatter #Einstein'sTheoryofGeneralRelativity #Galaxyclusters #gravitationalpull #ModifiedNewtonianDynamics(MOND) #Newton'sLawofGravitation #Science
https://www.newsbeep.com/us/634550/

https://www.europesays.com/uk/949998/ Dark Matter: Scientists tested Newton’s Law across 750 million light-years: Does gravity still work as Newton predicted? #BigBang #CosmicDistances #CosmicMicrowaveBackground #DarkMatter #Einstein'sTheoryOfGeneralRelativity #GalaxyClusters #GravitationalPull #ModifiedNewtonianDynamics(MOND) #Newton'sLawOfGravitation #Physics #Science #UK #UnitedKingdom

Dark Matter: Scientists tested Newton’s Law across 750 million light-years: Does gravity still work as Newton predicted?

It’s been more than three centuries since Isaac Newton figured out that gravity pulls thi…
#NewsBeep #News #Physics #bigbang #CA #Canada #CosmicDistances #cosmicmicrowavebackground #darkmatter #Einstein'sTheoryofGeneralRelativity #Galaxyclusters #gravitationalpull #ModifiedNewtonianDynamics(MOND) #Newton'sLawofGravitation #Science
https://www.newsbeep.com/ca/659770/

https://www.europesays.com/ie/477385/ Dark Matter: Scientists tested Newton’s Law across 750 million light-years: Does gravity still work as Newton predicted? #BigBang #CosmicDistances #CosmicMicrowaveBackground #DarkMatter #Einstein'sTheoryOfGeneralRelativity #Éire #GalaxyClusters #GravitationalPull #IE #Ireland #ModifiedNewtonianDynamics(MOND) #Newton'sLawOfGravitation #Science

https://www.europesays.com/ie/471613/ Scientists created one of the largest simulations of our universe ever — about the size of 500,000 HD movies #CosmicStructure #Éire #Flamingo #GalaxyClusters #GalaxyFormation #IE #Ireland #JoopSchaye #LeidenUniversity #Science #Simulation #Space #TheUniverse

Scientists reveal the hidden forces shaping how gravity works across the Universe

Gravity behaves predictably in your daily life. Drop a ball, and it falls. Planets loop around stars. On…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #AtacamaCosmologyTelescope #cosmicmicrowavebackground #Cosmology #DarkEnergy #Darkmatter #Galaxyclusters #gravity #kinematicSunyaev-Zeldovicheffect #lambda-CDM #MOND #Research #Science #SpaceNews
https://www.newsbeep.com/us/590101/

Scientists reveal the hidden forces shaping how gravity works across the Universe

Gravity behaves predictably in your daily life. Drop a ball, and it falls. Planets loop around stars. On…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #AtacamaCosmologyTelescope #cosmicmicrowavebackground #Cosmology #DarkEnergy #Darkmatter #Galaxyclusters #gravity #kinematicSunyaev-Zeldovicheffect #lambda-CDM #MOND #Research #Science #SpaceNews
https://www.newsbeep.com/us/590101/

https://www.europesays.com/ie/440122/ Scientists reveal the hidden forces shaping how gravity works across the Universe #AtacamaCosmologyTelescope #CosmicMicrowaveBackground #cosmology #DarkEnergy #DarkMatter #Éire #GalaxyClusters #gravity #IE #Ireland #KinematicSunyaevZeldovichEffect #LambdaCDM #MOND #Physics #Research #Science #SpaceNews

Scientists reveal the hidden forces shaping how gravity works across the Universe

Gravity behaves predictably in your daily life. Drop a ball, and it falls. Planets loop around stars. On…
#NewsBeep #News #Science #AtacamaCosmologyTelescope #AU #Australia #cosmicmicrowavebackground #Cosmology #Darkenergy #darkmatter #Galaxyclusters #gravity #kinematicSunyaev-Zeldovicheffect #Lambda-CDM #MOND #research #SpaceNews
https://www.newsbeep.com/au/613009/

Scientists reveal the hidden forces shaping how gravity works across the Universe

Gravity behaves predictably in your daily life. Drop a ball, and it falls. Planets loop around stars. On…
#NewsBeep #News #Science #AtacamaCosmologyTelescope #AU #Australia #cosmicmicrowavebackground #Cosmology #Darkenergy #darkmatter #Galaxyclusters #gravity #kinematicSunyaev-Zeldovicheffect #Lambda-CDM #MOND #research #SpaceNews
https://www.newsbeep.com/au/613009/

Gravity holds across cosmos, proving Newton and Einstein right

Scientists have tested gravity across some of the largest structures in the universe and found that it behaves…
#NewsBeep #News #Physics #Astrophysics #AtacamaCosmologyTelescope #CA #Canada #Cosmology #darkmatter #Galaxyclusters #generalrelativity #gravity #Science #universe
https://www.newsbeep.com/ca/609261/

https://www.europesays.com/uk/899205/ Gravity holds across cosmos, proving Newton and Einstein right #Astrophysics #AtacamaCosmologyTelescope #Cosmology #DarkMatter #GalaxyClusters #GeneralRelativity #gravity #Physics #Science #UK #UnitedKingdom #Universe

New in the #VirtualObservatory: “S-PLUS Fornax Project (S+FP)” by Haack R.F. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/708/A204
#InfraredPhotometry #VisibleAstronomy #GalaxyClusters #Galaxies

Weekly Update from the Open Journal of Astrophysics – 11/04/2026

With permission, I have time for yet another Saturday morning 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 76 and the total so far published by OJAp up to 524.

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 “Lagrangian versus Eulerian Methods for Toroidally-Magnetized Isothermal Disks” by Yashvardhan Tomar and Philip F. Hopkins (California Institute of Technology, USA). This study re-evaluates previous research on toroidally-magnetized disks, using two Lagrangian methods. The results suggest that sustained midplane toroidal fields in recent simulations are not a numerical artefact. It was published on Tuesday April 7th 2026 in the folder High-Energy Astrophysical Phenomena.

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/116362395042011770

The second paper for this week, published on Wednesday 8th Apil in the folder Instrumentation and Methods for Astrophysics, is “Teaching Astronomy with Large Language Models” by Yuan-Sen Ting and Teaghan O’Briain (Ohio State University, USA). The paper introduces AstroTutor, an AI-enhanced astronomy tutoring system, to improve undergraduate astronomy education and AI literacy. It found that structured AI integration can enhance learning and critical evaluation skills. The primary classification on arXiv for this paper is physics.ed-ph but it is cross-listed on astro-ph which qualifies it for consideration.

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/116368195945602700

Next one up, the third paper of the week, also published on Wednesday 8th April, is “Statistical Predictions of the Accreted Stellar Halos around Milky Way-Like Galaxies” by J. Sebastian Monzon & Frank C. van den Bosch (Yale University, USA) and Martin P. Rey (University of Bath, UK). This one was published in the section Astrophysics of Galaxies; it describes new model to track formation of stellar halos in Milky Way-like galaxies, revealing their sensitivity to the fate of the largest satellite and whether accretion is early or late.

The overlay for this one is here:

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

The fourth paper this week, published on Thursday 9th April is “A Tale of Tails: Star Formation and Stripping in Jellyfish Galaxies in the Strong Lensing Cluster MACS J0138.0-2155” by Catherine C. Gibson, Jackson H. O’Donnell and Tesla E. Jeltema (UC Santa Cruz, USA). This investigates the effects of ram-pressure stripping on four galaxies, focusing on their stellar and gas kinematics, star formation rates, and galactic structure and is published in the folder marked Astrophysics of Galaxies.

The overlay is here:

The finally accepted version of this paper can be found here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116374103962641944

The fifth and final paper for this week is “Investigating ionising sources and the complex interstellar medium of GHZ2 at z=12.3” by M. Castellano (INAF Osservatorio Astronomico di Roma, Italy) and 29 others based all around the world. This was also published on Thursday 9th April in the folder Astrophysics of Galaxies. The paper uses deep observations of galaxy GHZ2 to explore the sources of ionising radiation and interstellar medium properties at cosmic dawn. Findings suggest a stratified environment and a hard ionising radiation component.

The overlay for this one is here:

The officially-accepted version of this one can be found on arXiv here and the Mastodon announcement is here

https://fediscience.org/@OJ_Astro/116374246020924265

That concludes this week’s update. I’ll do another one at the end of next week, when the Easter vacations will be over.