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#agn — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #agn, aggregated by home.social.

  1. 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
  2. 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
  3. ReveaLLAGN 1 - JWST Emission-Line Spectra Reveal Low-Luminosity #AGN with UV-Deficient SEDs and Warm Molecular Gas: arxiv.org/abs/2601.16977 -> James Webb Space Telescope uncovers secret supermassive black holes that escape traditional detection: space.com/astronomy/james-webb

  4. #TachyonBeam #astronomy #galaxies #SMBH #AGN

    A rare example of three active galactic nuclei in three merging galaxies has been discovered using two radio telescopes: the VLA and the VLBA. The triple system is cataloged as J1218/1219+1035. This targeted study, conducted by a team of researchers at various radio frequencies, has identified only the third case of a triple active galactic nucleus, the first confirmed through radio observations.

    english.tachyonbeam.com/2025/1

  5. The First Triple Radio Active Galactic Nucleus in an Ongoing Galaxy Merger: iopscience.iop.org/article/10. -> A unique discovery - astronomers identify the first triple radio #AGN / Radio Black Hole Trio Lights Up in Rare Galaxy Merger: dvidshub.net/news/555300/uniqu / public.nrao.edu/news/radio-bla - first confirmed system of three radio-bright active galactic nuclei reveals how supermassive black holes grow as galaxies collide.

  6. #ESA:
    "
    Flaring black hole whips up ultra-fast winds
    "
    "Leading X-ray space telescopes XMM-Newton and XRISM have spotted an extraordinary blast from a supermassive black hole. In a matter of hours, the gravitational monster whipped up powerful winds, flinging material out into space at eye-watering speeds of 60 000 km per second."

    esa.int/Science_Exploration/Sp

    9.12.2025

    #AGN #BlackHole #JAXA #NGC3783 #Röntenstrahlung #SchwarzesLoch #SMBH #SRON #Weltraumteleskop #XMM #XRISM #Xray

  7. #ESA:
    "
    Flaring black hole whips up ultra-fast winds
    "
    "Leading X-ray space telescopes XMM-Newton and XRISM have spotted an extraordinary blast from a supermassive black hole. In a matter of hours, the gravitational monster whipped up powerful winds, flinging material out into space at eye-watering speeds of 60 000 km per second."

    esa.int/Science_Exploration/Sp

    9.12.2025

    #AGN #BlackHole #JAXA #NGC3783 #Röntenstrahlung #SchwarzesLoch #SMBH #SRON #Weltraumteleskop #XMM #XRISM #Xray

  8. #ESA:
    "
    Flaring black hole whips up ultra-fast winds
    "
    "Leading X-ray space telescopes XMM-Newton and XRISM have spotted an extraordinary blast from a supermassive black hole. In a matter of hours, the gravitational monster whipped up powerful winds, flinging material out into space at eye-watering speeds of 60 000 km per second."

    esa.int/Science_Exploration/Sp

    9.12.2025

    #AGN #BlackHole #JAXA #NGC3783 #Röntenstrahlung #SchwarzesLoch #SMBH #SRON #Weltraumteleskop #XMM #XRISM #Xray

  9. #ESA:
    "
    Flaring black hole whips up ultra-fast winds
    "
    "Leading X-ray space telescopes XMM-Newton and XRISM have spotted an extraordinary blast from a supermassive black hole. In a matter of hours, the gravitational monster whipped up powerful winds, flinging material out into space at eye-watering speeds of 60 000 km per second."

    esa.int/Science_Exploration/Sp

    9.12.2025

    #AGN #BlackHole #JAXA #NGC3783 #Röntenstrahlung #SchwarzesLoch #SMBH #SRON #Weltraumteleskop #XMM #XRISM #Xray

  10. #ESA:
    "
    Flaring black hole whips up ultra-fast winds
    "
    "Leading X-ray space telescopes XMM-Newton and XRISM have spotted an extraordinary blast from a supermassive black hole. In a matter of hours, the gravitational monster whipped up powerful winds, flinging material out into space at eye-watering speeds of 60 000 km per second."

    esa.int/Science_Exploration/Sp

    9.12.2025

    #AGN #BlackHole #JAXA #NGC3783 #Röntenstrahlung #SchwarzesLoch #SMBH #SRON #Weltraumteleskop #XMM #XRISM #Xray

  11. "Zwart gat vertoont helderste uitbarsting ooit nadat het een enorme ster opslokt"

    -> "De uitbarsting kwam van een actieve kern van een sterrenstelsel (een active galactic nucleus of kortweg AGN) op bijna 20 miljard lichtjaar afstand van de aarde."

    (Via #newscientist_NL ) #zwartgat #AGN
    newscientist.nl/nieuws/zwart-g

  12. Eruption record dans un noyau galactique actif
    🔸 Cette éruption est 30 fois plus puissante que la plus puissante éruption transitoire de noyau galactique actif (AGN) jamais enregistrée
    ca-se-passe-la-haut.fr/2025/11
    #science #astronomie #astrophysique #NAG #galaxie #éruption #trounoir #AGN

  13. Eruption record dans un noyau galactique actif
    🔸 Cette éruption est 30 fois plus puissante que la plus puissante éruption transitoire de noyau galactique actif (AGN) jamais enregistrée
    ca-se-passe-la-haut.fr/2025/11
    #science #astronomie #astrophysique #NAG #galaxie #éruption #trounoir #AGN

  14. Eruption record dans un noyau galactique actif
    🔸 Cette éruption est 30 fois plus puissante que la plus puissante éruption transitoire de noyau galactique actif (AGN) jamais enregistrée
    ca-se-passe-la-haut.fr/2025/11
    #science #astronomie #astrophysique #NAG #galaxie #éruption #trounoir #AGN

  15. Video ~ Okoli Classic Begs God For Life, Junior Pope Confirmed Dead, 3 Missing After 2 Boats Collide In River Niger ~ OsazuwaAkonedo

    Okoli Classic Begs God For Life, Junior Pope Confirmed Dead, 3 Missing After 2 Boats Collide In River Niger ~ OsazuwaAkonedo #AGN #Classic #Davido #Junior #Niger #Nollywood #Obumneme #Odonwodo #Okoli #Pope #River Nollywood Actress, Okoli Mather Chinonye Well Known As Okoli Classic In Her Verified Instagram Page Made A Status Post Few…

    osazuwaakonedo.news/video-okol

  16. Video ~ Okoli Classic Begs God For Life, Junior Pope Confirmed Dead, 3 Missing After 2 Boats Collide In River Niger ~ OsazuwaAkonedo

    Okoli Classic Begs God For Life, Junior Pope Confirmed Dead, 3 Missing After 2 Boats Collide In River Niger ~ OsazuwaAkonedo #AGN #Classic #Davido #Junior #Niger #Nollywood #Obumneme #Odonwodo #Okoli #Pope #River Nollywood Actress, Okoli Mather Chinonye Well Known As Okoli Classic In Her Verified Instagram Page Made A Status Post Few…

    osazuwaakonedo.news/video-okol

  17. Video ~ Okoli Classic Begs God For Life, Junior Pope Confirmed Dead, 3 Missing After 2 Boats Collide In River Niger ~ OsazuwaAkonedo

    Okoli Classic Begs God For Life, Junior Pope Confirmed Dead, 3 Missing After 2 Boats Collide In River Niger ~ OsazuwaAkonedo #AGN #Classic #Davido #Junior #Niger #Nollywood #Obumneme #Odonwodo #Okoli #Pope #River Nollywood Actress, Okoli Mather Chinonye Well Known As Okoli Classic In Her Verified Instagram Page Made A Status Post Few…

    osazuwaakonedo.news/video-okol

  18. Video ~ Okoli Classic Begs God For Life, Junior Pope Confirmed Dead, 3 Missing After 2 Boats Collide In River Niger ~ OsazuwaAkonedo

    Okoli Classic Begs God For Life, Junior Pope Confirmed Dead, 3 Missing After 2 Boats Collide In River Niger ~ OsazuwaAkonedo #AGN #Classic #Davido #Junior #Niger #Nollywood #Obumneme #Odonwodo #Okoli #Pope #River Nollywood Actress, Okoli Mather Chinonye Well Known As Okoli Classic In Her Verified Instagram Page Made A Status Post Few…

    osazuwaakonedo.news/video-okol

  19. Video ~ Okoli Classic Begs God For Life, Junior Pope Confirmed Dead, 3 Missing After 2 Boats Collide In River Niger ~ OsazuwaAkonedo

    Okoli Classic Begs God For Life, Junior Pope Confirmed Dead, 3 Missing After 2 Boats Collide In River Niger ~ OsazuwaAkonedo #AGN #Classic #Davido #Junior #Niger #Nollywood #Obumneme #Odonwodo #Okoli #Pope #River Nollywood Actress, Okoli Mather Chinonye Well Known As Okoli Classic In Her Verified Instagram Page Made A Status Post Few…

    osazuwaakonedo.news/video-okol

  20. Aviation weather for Angoon seaplane base (USA) is “PAGN 081956Z AUTO 00000KT 10SM CLR 10/08 A3019 RMK AO2 SLP211 T01000083 PWINO $” : See what it means on bigorre.org/aero/meteo/pagn/en #angoon #usa #angoonseaplanebase #pagn #agn #metar #aviation #aviationweather #avgeek #seaplanebase vl

  21. Aviation weather for Angoon seaplane base (USA) is “PAGN 081956Z AUTO 00000KT 10SM CLR 10/08 A3019 RMK AO2 SLP211 T01000083 PWINO $” : See what it means on bigorre.org/aero/meteo/pagn/en #angoon #usa #angoonseaplanebase #pagn #agn #metar #aviation #aviationweather #avgeek #seaplanebase vii3

  22. What if I tell you about a galaxy that has not one but two supermassive black holes? What if I tell you that these SMBH orbit very close to each other, at a distance of about 0.07 l-y? And, would you believe me if I tell you that these two, at the center of this galaxy, emanate a relativistic jet producing an active galactic nucleus? This all happens at the center of this well-known galaxy: M81.

    #astronomy #astrophysics #astrophotography #space #nightsky #outdoors #galaxy #AGN #Astrodon

  23. Une équipe d’astrophysiciens chinois vient de trouver l’existence d’une corrélation entre la vitesse de rotation des trous noirs supermassifs et le taux de formation des étoiles dans leur galaxie hôte.
    Par Éric Simon
    ca-se-passe-la-haut.fr/2025/02
    #astrophysique #science #trounoir #galaxies #étoiles #Chine #masse #vitesse #AGN

  24. Tripling the Census of Dwarf #AGN Candidates Using DESI Early Data: arxiv.org/abs/2411.00091 -> DESI Uncovers 300 New Intermediate-Mass Black Holes Plus 2500 New Active Black Holes in Dwarf Galaxies: noirlab.edu/public/news/noirla

  25. Weekly Update from the Open Journal of Astrophysics – 08/02/2025

    It’s Saturday morning, so once again it’s time for an update from the Open Journal of Astrophysics. Since the last update we have published one new paper, which brings the number in Volume 8 (2025) up to 12 and the total so far published by OJAp up to 247.

    Galaxy evolution in the post-merger regime. III – The triggering of active galactic nuclei peaks immediately after coalescence” was written by Sara Ellison, Leonardo Ferreira, Robert Bickley & Tess Grindlay (U. Victoria, Canada), Samir Salim (Indiana U., USA), Shoshannah Byrne-Mamahit (Victoria), Shobita Satyapal (George Mason U., USA), David R. Patton (Trent U., Canada) and Jillian M. Scudder (Oberlin College, USA).  It was published on 4th February 2025 and is in the folder marked Astrophysics of Galaxies. The paper describes an investigation into the timescale of triggering of AGN activity after galaxy mergers and concluding that most occurs immediately after coalescence. 

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

    That’s all for this week. I’ll have more updates next Saturday.

    #ActiveGalacticNuclei #AGN #arXiv241202804v2 #AstrophysicsOfGalaxies #DiamondOpenAccess #galaxyMergers #OJAp #OpenAccessPublishing_

  26. Weekly Update from the Open Journal of Astrophysics – 08/02/2025

    It’s Saturday morning, so once again it’s time for an update from the Open Journal of Astrophysics. Since the last update we have published one new paper, which brings the number in Volume 8 (2025) up to 12 and the total so far published by OJAp up to 247.

    Galaxy evolution in the post-merger regime. III – The triggering of active galactic nuclei peaks immediately after coalescence” was written by Sara Ellison, Leonardo Ferreira, Robert Bickley & Tess Grindlay (U. Victoria, Canada), Samir Salim (Indiana U., USA), Shoshannah Byrne-Mamahit (Victoria), Shobita Satyapal (George Mason U., USA), David R. Patton (Trent U., Canada) and Jillian M. Scudder (Oberlin College, USA).  It was published on 4th February 2025 and is in the folder marked Astrophysics of Galaxies. The paper describes an investigation into the timescale of triggering of AGN activity after galaxy mergers and concluding that most occurs immediately after coalescence. 

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

    That’s all for this week. I’ll have more updates next Saturday.

    #ActiveGalacticNuclei #AGN #arXiv241202804v2 #AstrophysicsOfGalaxies #DiamondOpenAccess #galaxyMergers #OJAp #OpenAccessPublishing_

  27. #MPIA:
    "
    Nahaufnahme eines supermassereichen Schwarzen Lochs in Aktion

    Eine neue Art der Beobachtung zeigt, was die Kerne aktiver Galaxien glühen lässt.
    "
    mpia.de/aktuelles/wissenschaft

    17.1.2025

    #AGN #Astronomie #Galaxie #LBT #Messier77 #MountGraham #NGC1068 #OVMS+ #SchwarzesLoch #UofA

  28. #MPIA:
    "
    Nahaufnahme eines supermassereichen Schwarzen Lochs in Aktion

    Eine neue Art der Beobachtung zeigt, was die Kerne aktiver Galaxien glühen lässt.
    "
    mpia.de/aktuelles/wissenschaft

    17.1.2025

    #AGN #Astronomie #Galaxie #LBT #Messier77 #MountGraham #NGC1068 #OVMS+ #SchwarzesLoch #UofA

  29. #MPIA:
    "
    Nahaufnahme eines supermassereichen Schwarzen Lochs in Aktion

    Eine neue Art der Beobachtung zeigt, was die Kerne aktiver Galaxien glühen lässt.
    "
    mpia.de/aktuelles/wissenschaft

    17.1.2025

    #AGN #Astronomie #Galaxie #LBT #Messier77 #MountGraham #NGC1068 #OVMS+ #SchwarzesLoch #UofA

  30. #MPIA:
    "
    Nahaufnahme eines supermassereichen Schwarzen Lochs in Aktion

    Eine neue Art der Beobachtung zeigt, was die Kerne aktiver Galaxien glühen lässt.
    "
    mpia.de/aktuelles/wissenschaft

    17.1.2025

    #AGN #Astronomie #Galaxie #LBT #Messier77 #MountGraham #NGC1068 #OVMS+ #SchwarzesLoch #UofA

  31. #MPIA:
    "
    Nahaufnahme eines supermassereichen Schwarzen Lochs in Aktion

    Eine neue Art der Beobachtung zeigt, was die Kerne aktiver Galaxien glühen lässt.
    "
    mpia.de/aktuelles/wissenschaft

    17.1.2025

    #AGN #Astronomie #Galaxie #LBT #Messier77 #MountGraham #NGC1068 #OVMS+ #SchwarzesLoch #UofA