Lmst

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

https://www.space.com/the-universe/black-holes/a-monster-black-hole-may-be-hiding-in-the-galaxy-next-door-it-is-astounding

#science #astronomy #astrophysics #LargeMagellanicCloud #supermassiveblackholes

Was reading some online slides and came across this excellent #RadioAstronomy image from the NRAO/AUI/NSF.

The terrestrial portion is optical wavelengths. Above this is radio wavelengths.

Those are not stars. They are radio sources.

They're supermassive black holes in the centres of galaxies.

The sky portion of this image was taken by the now fallen 300-ft radio telescope, pictured here as the largest dish between the smaller dishes.

If you had a radio wavelength-detecting eye that was 300 feet in diameter, this is how the sky would look to you.

A sea sprinkled with ancient light.

You can download this image, and use it from this link from the NRAO site here: https://www.nrao.edu/archives/items/show/33605

Be sure to attribute properly and just copy my alt-text.

You can also read the paper here: https://articles.adsabs.harvard.edu/pdf/1994AJ....107.1829C

#RadioAstronomy #SupermassiveBlackHoles #Astrodon

The lower half of the image shows a radio astronomy observatory off in the distance, nestled in front of mountains. Prominently standing out from the dark image is a large, white radio dish antenna, with several smaller antennas also located nearby. The sky above the mountains is freckled with point sources of light. In addition, there are translucent, globular structures and bright, irregularly shaped structures. The light points are the supermassive black holes and the other structures are from our own Milky Way Galaxy.

Black Holes Can Cook for Themselves, Chandra Study Shows https://www.nasa.gov/image-article/black-holes-can-cook-for-themselves-chandra-study-shows/ #NASA #Astrophysics #BlackHoles #ChandraXRayObservatory #Galaxies #GalaxiesStarsBlackHoles #GalaxiesStarsBlackHolesResearch #MarshallAstrophysics #MarshallScienceResearchProjects #MarshallSpaceFlightCenter #SupermassiveBlackHoles

Black Holes Can Cook for Themselves, Chandra Study Shows https://www.nasa.gov/image-article/black-holes-can-cook-for-themselves-chandra-study-shows/ #NASA #Astrophysics #BlackHoles #ChandraXRayObservatory #Galaxies #GalaxiesStarsBlackHoles #GalaxiesStarsBlackHolesResearch #MarshallSpaceFlightCenter #SupermassiveBlackHoles

Newfound Galaxy Class May Indicate Early Black Hole Growth, Webb Finds https://science.nasa.gov/missions/webb/newfound-galaxy-class-may-indicate-early-black-hole-growth-webb-finds/ #NASA #Astrophysics #BlackHoles #Galaxies #GalaxiesStarsBlackHoles #GoddardSpaceFlightCenter #JamesWebbSpaceTelescopeJWST #ScienceResearch #SupermassiveBlackHoles #TheUniverse

Astronomers Catch Unprecedented Features at Brink of Active Black Hole https://science.nasa.gov/universe/black-holes/supermassive-black-holes/astronomers-catch-unprecedented-features-at-brink-of-active-black-hole/ #NASA #ActiveGalaxies #Astrophysics #BlackHoles #GalaxiesStarsBlackHoles #GoddardSpaceFlightCenter #JetPropulsionLaboratory #NeilGehrelsSwiftObservatory #NICERNeutronStarInteriorCompositionExplorer #NuSTARNuclearSpectroscopicTelescopeArray #SupermassiveBlackHoles #TheUniverse

NASA’s Swift Studies Gas-Churning Monster Black Holes https://science.nasa.gov/missions/swift/nasas-swift-studies-gas-churning-monster-black-holes/ #NASA #Astrophysics #BlackHoles #GalaxiesStarsBlackHoles #GalaxiesStarsBlackHolesResearch #GoddardSpaceFlightCenter #NeilGehrelsSwiftObservatory #ScienceResearch #SupermassiveBlackHoles #TheUniverse

Black Hole Destroys Star, Goes After Another, NASA Missions Find https://www.nasa.gov/image-article/black-hole-destroys-star-goes-after-another-nasa-missions-find/ #NASA #Astrophysics #BlackHoles #ChandraXRayObservatory #GalaxiesStarsBlackHoles #GalaxiesStarsBlackHolesResearch #MarshallSpaceFlightCenter #ScienceResearch #SupermassiveBlackHoles #TheUniverse

NASA Telescopes Work Out Black Hole’s Snack Schedule https://www.nasa.gov/image-article/nasa-telescopes-work-out-black-holes-snack-schedule/ #NASA #Astrophysics #BlackHoles #ChandraXRayObservatory #GalaxiesStarsBlackHolesResearch #MarshallSpaceFlightCenter #ScienceResearch #SupermassiveBlackHoles

Spitzer gives scientists insights into black hole eating habits https://www.nasaspaceflight.com/2024/05/black-hole-eating-habits/ #supermassiveblackholes #astrophysics #blackholes #andromeda #galaxies #milkyway #spitzer #other #nasa

Figuring out how fast supermassive black holes spin
https://www.space.com/black-holes-lense-thirring-effect-frame-dragging-spacetime

#space #science #BlackHoles #SupermassiveBlackHoles #spacetime

Spotted: ‘Death Star’ Black Holes in Action https://www.nasa.gov/image-article/spotted-death-star-black-holes-in-action/ #NASA #Astrophysics #BlackHoles #ChandraXRayObservatory #Galaxies #GalaxiesStarsBlackHoles #GalaxiesStarsBlackHolesResearch #GalaxyClusters #MarshallSpaceFlightCenter #ScienceResearch #SupermassiveBlackHoles #TheUniverse

Spitzer Space Telescope Captures Galactic Snack https://www.nasa.gov/image-article/spitzer-space-telescope-captures-galactic-snack/ #NASA #AndromedaGalaxy #BlackHoles #SpitzerSpaceTelescope #SupermassiveBlackHoles

NASA’s Chandra Notices the Galactic Center is Venting https://www.nasa.gov/image-article/nasas-chandra-notices-the-galactic-center-is-venting/ #NASA #Astrophysics #BlackHoles #ChandraXRayObservatory #GalaxiesStarsBlackHoles #GalaxiesStarsBlackHolesResearch #MarshallSpaceFlightCenter #ScienceResearch #SupermassiveBlackHoles #TheUniverse

In Jan, #astronomers announced that the #JamesWebbSpaceTelescope had observed the oldest black hole yet—one present when the universe was a mere 400M yrs old.…Recently, 2 #SupermassiveBlackHoles, w/a combined mass of 28B suns, were measured & shown to have been rotating tightly around each other, but not colliding, for the past 3B years. And those are just the examples that are easiest for the public to make some sense of.

#BlackHoles #Astrophysics #astronomy #TheoreticalPhysics #science