#quasars — Public Fediverse posts

Weekly Update from the Open Journal of Astrophysics 08/08/2026

Although it’s holiday season for some, it’s time once more for another Saturday update of activity at the Open Journal of Astrophysics. Since the last update we have published a further four papers, bringing the number in Volume 9 (2026) to 167 and the total so far published by OJAp up to 615.

I 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 was published on Tuesday 4th August in the folder Astrophysics of Galaxies with the title “Small-scale turbulence alongside large-scale turbulence in a z=1.87 star-forming galaxy with an outflowing wind, revealed by multi-point structure functions” by Itzhak Goldman (Afeka College, Israel). A previous study by the author found evidence of large and small scale turbulence in the star-forming galaxy CSWA13, suggesting that star clusters and large clumps within the galaxy could be driving this turbulence.

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/117036181269903989

The second paper for this week, published on Thursday 6th August in the folder Astrophysics of Galaxies, is “From Clumps to Sheets: Geometry Controls the Temperature PDF of Multi-Phase Gas” by Zirui Chen and S. Peng Oh (UC Santa Barbara, USA). This study uses 3D hydrodynamic simulations to show that the temperature probability distribution functions (PDFs) of multi-phase turbulent gas differ significantly under interstellar medium (ISM) and circumgalactic medium (CGM) conditions.

The overlay 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/117047322340826393

The third paper of the week, published on Thursday 6th August in folder Instrumentation and Methods for Astrophysics is “First Detection of Extensive Air Showers Using a Small-Aperture Fluorescence Telescope” by M. Zotov (M.V. Lomonosov Moscow State University, Russia) and 7 others based in Russia and Armenia. The study reports the first-ever detection of extensive air showers from ultra-high-energy cosmic rays using a compact fluorescence telescope, employing both conventional and deep learning analysis methods.

The overlay is here:

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

https://fediscience.org/@OJ_Astro/117047408583672745

The fourth and final paper of the week was published on Friday 7th August in the folder Cosmology and Nongalactic Astrophysics: “TDCOSMO XXVI: Uniform Lens Modeling of Eight Doubly Imaged Quasars“, by Ryan Brady (Stony Brook University, USA) and 9 others based all around the world, presents a new method for analyzing doubly imaged quasars using the Hubble Space Telescope, revealing that arc surface brightness is key to precision in mass model measurements.

The overlay is here:

The officially-accepted version of the paper can be found on arXiv here and the Fediverse announcement here:

https://fediscience.org/@OJ_Astro/117053056092162466

That’s all for this week. We have about a dozen more papers accepted and waiting for the authors to put the final version on arXiv, which they will presumably do when they’re back from holiday. I’ll do an update next weekend and we’ll see!

The ingredients of a cosmological mystery: Big Ring, Giant Arc, Sloan Great Wall, South Pole Wall, Clowes-Campusano Large Quasar Group, Laniakea Supercluster, the dark flow, Sir Roger Penrose's Conformal Cyclic Cosmology, cosmic strings, ...
https://www.space.com/big-ring-galactic-superstructure-celestial-anomaly

#cosmology #bigring #giantarc #sloangreatwall #southpolewall #ClowesCampeanoLQG #quasars #laniakea #supercluster #laniakeasupercluster #galaxies #darkflow #penrose #rogerpenrose #CCC #cycliccosmology #cosmicstrings #astronomy #space

Great paper by Mirjam Guesgen for @Motherboard @VICENews on the discovery of the Big Ring

On the proximity of this structure with the Giant Arc:
“Identifying two extraordinary ultra-large structures in such close configuration raises the possibility that together they form an even more extraordinary cosmological system.” @morninglopez (co-author of the discovery)

https://www.vice.com/en/article/m7bwea/scientists-discover-big-ring-ultra-large-structure-in-space

#bigring #giantarc #galaxies #quasars #sdss #cosmology #astronomy #astrophysics #astrodon #space #science

What is a #Quasar?
• https://www.space.com/17262-quasar-definition.html
• https://en.m.wikipedia.org/wiki/Quasar

Photo (ESO): Artist’s impression of ULAS J1120+0641 (more information: https://www.eso.org/public/images/eso1122a/).

Thread: 3/3

#SpaceMastodon #Spacedon #Space #AstronomyMastodon #Astrodon #Astronomy #ScienceMastodon #Sciencedon #Science #Quasars #SpaceFacts #Facts

Photo: #Hubble's lens reveals ancient quasar 3C 273, shining from a distant #Galaxy in #Virgo constellation. After 2.5 billion years, its light finally reaches us, making it one of our closest quasars. Discovered by astronomer Allan Sandage in the '60s, it remains a celestial marvel.

Thread: 2/x

#SpaceMastodon #Spacedon #Space #AstronomyMastodon #Astrodon #Astronomy #ScienceMastodon #Sciencedon #Science #Quasars #HubbleSpaceTelescope #HST #SpaceFacts #Facts

#SpaceFactSunday: Did you know that quasars can outshine an entire galaxy? 🤔✨🌌

These luminous beasts unleash energy from supermassive black holes at their cores, making them the ultimate cosmic light show. It's like a celestial fireworks display on steroids!

Photo information in thread: 1/x

#SpaceMastodon #Spacedon #Space #AstronomyMastodon #Astrodon #Astronomy #ScienceMastodon #Sciencedon #Science #Quasars #SpaceFacts #Facts

Check out this interactive 3D #map of a ~1 Gpc^3 volume of the #universe: https://skfb.ly/6RyGE
It was created by analyzing the Lyman-alpha absorption lines of the light emitted by distant #quasars, using data collected by the #SDSS Sloan Digital Sky Survey / eBOSS Extended Baryon Oscillation Spectroscopic Survey.

JCAP paper, see Fig.8: https://doi.org/10.1088/1475-7516/2020/07/010

News story by CEA/Saclay: https://irfu.cea.fr/en/Phocea/Vie_des_labos/Ast/ast.php?t=fait_marquant&id_ast=4819

#cosmology #astronomy #astrophysics #cosmicweb #space #science #physics #sketchfab

#RogerPenrose - "#Consciousness must be beyond #computable #physics."

https://www.youtube.com/watch?v=TfouEFuB-co&ab_channel=NewScientist

#Science #Cosmology #PhilosophyOfCosmology #BigBang #TheBigBang #CyclicCosmology #ConformalCyclicCosmology #BlackHole #BlackHoles #Quasar #Quasars #Aeon #Aeons #Nobel #NobelPrize #NobelPrizeForPhysics #SETI #NewScientist