Lmst

Runaway black hole mergers may have built supermassive black holes https://arstechni.ca/Jb9a #JamesWebbSpaceTelescope #supermassiveblackholes #astrophysics #blackholes #astronomy #cosmology #Science

While we're on the subject of the horrifying scale of the Universe, I cannot get over what big fat bastard the SMBH at the centre of M87 is when compared to ours!

#Astrodon #SuperMassiveBlackHoles #M87 #MilkyWayGalaxy #Space

Size comparison of the two black holes imaged by the Event Horizon Telescope (EHT) Collaboration: M87*, at the heart of the galaxy Messier 87, and Sagittarius A* (Sgr A*), at the centre of the Milky Way. The image shows the scale of Sgr A* in comparison with both M87* and other elements of the Solar System such as the orbits of Pluto and Mercury. Also displayed is the Sun’s diameter and the current location of the Voyager 1 space probe, the furthest spacecraft from Earth. M87*, which lies 55 million light-years away, is one of the largest black holes known. While Sgr A*, 27 000 light-years away, has a mass roughly four million times the Sun’s mass, M87* is more than 1000 times more massive. Because of their relative distances from Earth, both black holes appear the same size in the sky.
(from Wikipedia)

NASA’s Chandra Finds Black Hole With Tremendous Growth

A black hole is growing at one of the fastest rates ever recorded, according to a team of…
#NewsBeep #News #Headlines #&BlackHolesResearch #Astrophysics #BlackHoles #ChandraX-RayObservatory #Galaxies #Latvia #LV #MarshallAstrophysics #MarshallSpaceFlightCenter #Quasars #Science&Research #Stars #SupermassiveBlackHoles #TheUniverse
https://www.newsbeep.com/131161/

NASA’s Chandra Finds Black Hole With Tremendous Growth https://www.nasa.gov/missions/chandra/nasas-chandra-finds-black-hole-with-tremendous-growth/ #NASA #ChandraXRayObservatory #Astrophysics #BlackHoles #GalaxiesStarsBlackHoles #GalaxiesStarsBlackHolesResearch #MarshallAstrophysics #MarshallSpaceFlightCenter #Quasars #ScienceResearch #SupermassiveBlackHoles #TheUniverse

Galaxies Older Than Thought - David Kipping and Joe Rogan

#galaxies #supermassiveblackholes #redshift

NASA’s Chandra Sees Surprisingly Strong Black Hole Jet at Cosmic “Noon” https://www.nasa.gov/image-article/nasas-chandra-sees-surprisingly-strong-black-hole-jet-at-cosmic-noon/ #NASA #Astrophysics #BlackHoles #ChandraXRayObservatory #GalaxiesStarsBlackHoles #MarshallAstrophysics #MarshallSpaceFlightCenter #Quasars #SupermassiveBlackHoles #TheUniverse

NASA’s IXPE Reveals X-ray-Generating Particles in Black Hole Jets https://www.nasa.gov/missions/ixpe/nasas-ixpe-reveals-x-ray-generating-particles-in-black-hole-jets/ #NASA #IXPEImagingXRayPolarimetryExplorer #Astrophysics #BlackHoles #MarshallAstrophysics #MarshallScienceResearchProjects #MarshallSpaceFlightCenter #SupermassiveBlackHoles #TheUniverse

NASA’s NICER Maps Debris From Recurring Cosmic Crashes https://science.nasa.gov/universe/nasas-nicer-maps-debris-from-recurring-cosmic-crashes/ #NASA #Astrophysics #BlackHoles #GalaxiesStarsBlackHoles #GalaxiesStarsBlackHolesResearch #InternationalSpaceStationISS #ISSResearch #NICERNeutronStarInteriorCompositionExplorer #ScienceResearch #SupermassiveBlackHoles #TheUniverse #XRayAstronomy

Weekly Update at the Open Journal of Astrophysics – 22/03/2025

It’s Satuday morning once again, and time for another update of papers published at the Open Journal of Astrophysics. Since the last update we have published two papers, which brings the number in Volume 8 (2025) up to 29 and the total so far published by OJAp up to 264.

The papers we have published this week are connected by the theme of black holes and their role in galaxy formation, which is a very hot topic nowadays!

The first paper to report is “Hawking Radiation from non-evaporating primordial black holes cannot enable the formation of direct collapse black holes” by Jonathan Regan, Marios Kalomenopoulos and Kelly Kosmo O’Neil of the University of Nevada, USA. This paper, which is based on an undergraduate thesis, is a study of the irradiating effects of primordial black holes and a discussion of whether these might influence the subsequent formation of supermassive black holes. It is in the section marked Astrophysics of Galaxies, and was published on Tuesday 18th March.

The overlay is here:

and you can find the final accepted version on arXiv here.

The second paper, which was published on Wednesday 19th March and is also in the folder Astrophysics of Galaxies, is “First Light and Reionization Epoch Simulations (FLARES) – XV: The physical properties of super-massive black holes and their impact on galaxies in the early universe” by Stephen Wilkins & Jussi K. Kuusisto (U. Sussex, UK), Dimitrios Irodotou (Institute of Cancer Research, UK), Shihong Liao (Beijing, China) Christopher C. Lovell (Portsmouth, UK), Sonja Soininen (Insitute of Cancer Research), Sabrina C. Berger (Melbourne, Australia), Sophie L. Newman (Portsmouth, UK), William J. Roper (Sussex), Louise T. C. Seeyave (Sussex), Peter A. Thomas (Sussex) and Aswin P. Vijayan Sussex). This paper uses cosmological hydrodynamical zoom simulations to study the formation of supermassive black holes and their impact on star formation in the early Universe.

Here is the overlay, which you can click on to make larger if you wish:

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

That’s all for this week. It’s been a bit frustrating for me as Managing Ediutor, because we have built up a backlog of several papers that were accepted for publication some time ago, but are still waiting for the authors to place the final version on arXiv. I hope these won’t take too long to appear, not least because I would like to clear my workflow on the Scholastica platform!

#arXiv240402815v3 #arXiv241109081v2 #AstrophysicsOfGalaxies #DiamondOpenAccess #FirstLight #FLARES #galaxyFormation #HawkingRadiation #OpenAccessPublishing #OpenJournalOfAstrophysics #primordialBlackHoles #reionization #supermassiveBlackHoles