#vera-c-rubin-observatory — Public Fediverse posts

https://www.europesays.com/ie/621483/ Rubin Observatory Reveals More Than Half a Million Galaxies in Landmark First Science Image #Astronomy #COSMOSField #Éire #IE #Ireland #LegacySurveyOfSpaceAndTime #NSF #Science #Space #VeraCRubinObservatory

NSF-DOE Vera C. Rubin Observatory LSST: Meet the World's Largest Digital Camera

https://web.brid.gy/r/https://in.mashable.com/science/112485/nsf-doe-vera-c-rubin-observatory-lsst-meet-the-worlds-largest-digital-camera

NSF-DOE Vera C. Rubin Observatory LSST: Meet the World's Largest Digital Camera

https://fed.brid.gy/r/https://in.mashable.com/science/112485/nsf-doe-vera-c-rubin-observatory-lsst-meet-the-worlds-largest-digital-camera

https://www.europesays.com/ie/618572/ Rubin Gets a Closer Look at the COSMOS Field, Revealing More Than 650,000 Galaxies in One Image #Astronomy #Éire #Galaxies #IE #Ireland #Science #VeraCRubinObservatory

https://www.europesays.com/ie/616059/ The world’s largest digital camera captured more than 500,000 galaxies and 50,000 stars in one deep view of the universe #COSMOSField #Éire #Galaxies #IE #Ireland #LSSTCamera #MilkyWay #Science #SimonyiSurveyTelescope #Space #USNationalScienceFoundation #VeraCRubinObservatory

https://www.europesays.com/uk/1124655/ The world’s largest digital camera captured more than 500,000 galaxies and 50,000 stars in one deep view of the universe #COSMOSField #Galaxies #LSSTCamera #MilkyWay #Science #SimonyiSurveyTelescope #Space #UK #UnitedKingdom #USNationalScienceFoundation #VeraCRubinObservatory

https://www.europesays.com/ie/583243/ Most Ambitious Sky Survey Ever Begins with Hungarian Scientists on the Team #Astronomy #chile #Éire #HUNREN #HungarianResearch #IE #Ireland #Observatory #Science #Telescope #VeraCRubinObservatory

Most Ambitious Sky Survey Ever Begins With Hungarian Scientists on the Team https://www.byteseu.com/2191530/ #astronomy #Chile #HUNREN #HungarianResearch #Hungary #observatory #Telescope #VeraCRubinObservatory

https://www.europesays.com/cz/136999/ Nový dalekohled bude deset let sledovat, jak se mění vesmír. Zapojeni jsou i Češi #Astronomie #Chile #FyzikálníústavAVČR #observatoř #Science #Science&Technology #Technika #Technology #teleskop #Věda #VědaATechnika #VeraCRubinObservatory #vesmír

https://www.europesays.com/at/252201/ „Größter kosmischer Film“: Rubin Observatory beginnt seine Hauptmission #Astronomie #AT #Austria #Forschung #LSST #Österreich #Science #Science&Technology #Technik #Technology #VeraCRubinObservatory #Wissenschaft #Wissenschaft&Technik

https://www.europesays.com/ie/563897/ Rubin Observatory Begins Its 10-Year Survey of the Universe #Astronomy #Éire #IE #Ireland #Science #Space #Telescopes #VeraCRubinObservatory #VeraRubin

https://www.europesays.com/de/1135667/ „Größter kosmischer Film“: Rubin Observatory beginnt seine Hauptmission #Astronomie #Deutschland #Forschung #Germany #LSST #Science #Science&Technology #Technik #Technology #VeraCRubinObservatory #Wissenschaft #Wissenschaft&Technik

https://www.europesays.com/uk/1060671/ Massive 3,200 Megapixel Camera Will Take 700 Photos Every Night for 10 Years #Astronomy #Astrophysics #chile #legacysurveyofspaceandtime #LSST #lsstcamera #noirlab #nsf #observatory #Science #Space #Telescope #UK #UnitedKingdom #veracrubinobservatory

Massive 3,200 Megapixel Camera Will Take 700 Photos Every Night for 10 Years

‘This 1.7-gigapixel image of a field of stars in the constellation Lupus showcases the unprecedented view of the…
#NewsBeep #News #Science #astronomy #Astrophysics #Chile #GB #legacysurveyofspaceandtime #LSST #lsstcamera #NOIRLab #NSF #observatory #Space #telescope #UK #UnitedKingdom #veracrubinobservatory
https://www.newsbeep.com/uk/666808/

Massive 3,200 Megapixel Camera Will Take 700 Photos Every Night for 10 Years https://petapixel.com/2026/06/30/the-worlds-largest-digital-camera-just-started-its-10-year-mission-to-map-the-universe/ #legacysurveyofspaceandtime #veracrubinobservatory #astrophysics #observatory #lsstcamera #astronomy #telescope #noirlab #science #Space #chile #space #News #lsst #nsf

Weekly Update from the Open Journal of Astrophysics – 30/05/2026

It’s Saturday once 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 four papers, bringing the number in Volume 9 (2026) to 114 and the total so far published by OJAp up to 562.

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 Monday 25th May is “Little Red Dot – Host Galaxy = Black Hole Star: A Gas-Enshrouded Heart at the Center of Every Little Red Dot” by Wendy Q. Sun (MIT, USA) and 32 others from around the world. This study presents evidence that “black hole stars” (BH*), early stages of black hole growth, power Little Red Dots (LRDs) and every massive black hole may have been a BH*.

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/116633975428093674

The second paper for this week, also published on Monday 25th May but in the folder Cosmology and Nongalactic Astrophysics, is “Catalog-based detection of unrecognized blends in deep optical ground based imaging” by Shuang Liang (Stanford U., USA) and Prakruth Adari & Anja von der Linden (Stony Brook U., USA) on behalf of the LSST Dark Energy Science Collaboration. The study uses machine learning to detect unrecognized blends in deep ground-based imaging, improving sample purity and potentially enhancing accuracy in future cosmological surveys.

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/116634039240557325

Next one up, the third paper of the week, published on Tuesday 26th May in the folder Cosmology and Nongalactic Astrophysics is “Control variates from Eulerian and Lagrangian perturbation theory: Application to the bispectrum” by Nickolas Kokron and Shi-Fan Chen (Institute for Advanced Study, Princeton, USA). This paper hexplores the use of control variates in cosmological simulations, introducing a new ‘shifted control variate’ that improves precision and enables accurate bispectrum emulators, aiding in cosmology modeling.

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/116594304124291605

The fourth and final paper this week, also published on Tuesday 26th May is “How precisely can we measure the ages of subgiant and giant stars?” by Cheyanne Shariat, Kareem El-Badry and Soumyadeep Bhattacharjee (California Institute of Technology, USA). This article, published in the folder Solar and Stellar Astrophysics, is about testing the accuracy of stellar age estimates from recent catalogs, finding that spectroscopic metallicities provide reliable subgiant ages, while photometric ages underestimate uncertainties. Accurate chemical abundance measurements are essential.

The overlay is here:

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

https://fediscience.org/@OJ_Astro/116639604621500984

And that concludes this week’s update. I’ll do another one next Saturday.

Weekly Update from the Open Journal of Astrophysics – 23/05/2026

It’s Saturday once again, so time for another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further six papers, bringing the number in Volume 9 (2026) to 110 and the total so far published by OJAp up to 558.

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 Monday 18th May in the folder Instrumentation and Methods for Astrophysics is “Edges In Coadded Images” by Erin Sheldon (Brookhaven National Laboratory, USA). This paper describes a study exploring how image discontinuities and noise impact weak gravitational lensing measurements, finding no significant biases under typical conditions. Biases occur only in extreme cases, but can be mitigated.

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/116594222032390191

The second paper for this week, also published on Monday 18th May but in the folder Cosmology and Nongalactic Astrophysics, is “Joint cosmological fits to DESI-DR1 full-shape clustering and weak gravitational lensing in configuration space” by A. Semenaite (Swinburne Institute of Technology, Australia) and 72 other authors from all round the world. This paper presents a cosmological analysis of correlations between the DESI-DR1 Bright Galaxy Survey and Luminous Red Galaxy samples and overlapping shear measurements from various weak lensing surveys.

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/116594256215421009

Next one up, the third paper of the week, and the third published on Monday 18th May, and in the folder Cosmology and Nongalactic Astrophysics is “Probing Dark Energy Microphysics with kSZ Tomography” by Julius Adolff, Selim Hotinli and Neal Dalal (all of the Perimeter Institute, Canada). This paper explores how kinetic Sunyaev-Zel’dovich tomography and galaxy clustering can enhance our understanding of dark energy and its effects, potentially revealing its microphysical properties in future surveys.

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/116594304124291605

The fourth paper this week, published on Wednesday May 20th is “A Census of Variable Radio Sources at 3 GHz” by Yjan A. Gordon, Peter S. Ferguson, Michael N. Martinez and Eric J. Hooper (all of the University of Wisconsin, USA). This article, published in the folder Astrophysics of Galaxies, uses data from the Very Large Array Sky Survey to analyze variability in the radio sky, finding most changes consistent with blazars and quasars.

The overlay is here:

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

https://fediscience.org/@OJ_Astro/116607468481260244

The fifth article of this week was published on Friday 22nd May in the folder Instrumentation and Methods for Astrophysics. The title is “Uncovering the Next Galactic Supernova with the Vera C. Rubin Observatory” by John Banovetz (Lawrence Berkeley Lab., USA), Claire-Alice Hebert & Peter B. Denton (Brookhaven National Lab., USA), Dan Scolnic (Duke University, USA), Anze Slosar (Brookhaven) and Chris Walter (Duke). The paper presents a study simulating how effectively the Vera C. Rubin Observatory can localize supernovae using neutrino triggers, finding a 57-97% success rate based on stellar mass density predictions.

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/116617293753093751

Last, but by no means least, this week we have “Pulsar timing solutions for 17 pulsars at 150 MHz from the Irish LOFAR station” by David J. McKenna (ASTRON, The Netherlands), Evan F. Keane (Trinity College Dublin, Ireland), Peter T. Gallagher (DIAS, Ireland) and Joe McCauley (Trinity). This was published on Friday 22nd May in the folder High-Energy Astrophysical Phenomena. It presents a demonstration of the use of international Low Frequency Array (LOFAR) stations in tracking and characterizing pulsars, providing new insights into these neutron stars’ emission properties.

The overlay for this one 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/116617404344791486

And that concludes this week’s update. I’ll do another one next Saturday.

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.

Weekly Update from the Open Journal of Astrophysics – 25/04/2026

So here we are again, on a Saturday morning, with another 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 87 and the total so far published by OJAp up to 535.

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 “Bayesian Cosmic Void Finding with Graph Flows” by Leander Thiele (U. Tokyo, Japan). This was published on Monday 20th April in the folder Cosmology and Nongalactic Astrophysics. The paper presents a method using a deep graph neural network to identify cosmic voids in sparse galaxy surveys, improving upon traditional deterministic algorithms by considering the problem’s probabilistic nature. 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/116435864086025246

The second paper for this week, published on Wednesday 22nd April in the folder Astrophysics of Galaxies, is “Sifting for a Stream: The Morphology of the 300S Stellar Stream” by Benjamin Cohen (U. Chicago, USA) and 20 others distributed around the world. This study analyzes the morphology of the $300S$ stellar stream, revealing three density peaks, a possible gap, and a kink, suggesting significant influence from the Large Magellanic Cloud on its structure.

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/116447005556180402

Next one up, the third paper of the week, is “IRMaGiC: Extending Luminous Red Galaxy Selection into the Infrared with Joint Rubin Observatory’s Large Survey of Space Time and Roman’s High Latitude Imaging Survey” by Zhiyuan Guo & Chris. W. Walter (Duke U., USA) and Eli S. Rykoff (Stanford U., USA) on behalf of the LSST Dark Energy Science Collaboration. This was published on Wednesday April 22nd in the folder Cosmology and Nongalactic Astrophysics. The paper introduces IRMaGiC, an algorithm that improves the selection and redshift estimation of Luminous Red Galaxies (LRGs) by incorporating infrared data, enhancing future cosmological surveys.

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/116447067337351283

The fourth paper this week, published on Thursday April 23rd, is “The Diagnostic Temperature Discrepancy as Evidence for Non-Maxwellian Coronal Electrons” by Victor Edmonds (Final Stop Consulting, USA). This paper, in the folder Solar and Stellar Astrophysics, presents two methods of measuring electron temperature in the quiet solar corona yielding different results, suggesting non-Maxwellian electron velocity distributions may be responsible for the discrepancy.

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/116452775389963618

The fifth and final paper for this week was published on Friday 24th April in the folder Astrophysics of Galaxies. The title is “Galaxy evolution in the post-merger regime. IV – The long-term effect of mergers on galactic stellar mass growth and distribution” by Sara L. Ellison (U. Victoria, Canada) and Leonardo Ferreira (Universidade Federal do Rio Grande, Brazil). This study uses a large sample of post-merger galaxies to demonstrate that galaxy mergers trigger significant and extended stellar mass growth in their central regions, independent of stellar population modelling.

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/116458316824739014

The overlay for this one is here:

You can find the officially-accepted version on arXiv here and the Mastodon announcement here:

https://fediscience.org/@OJ_Astro/116458316824739014

And that concludes this week’s update. I’ll do another one at the end of next week.

P.S. Thanks to the efforts of a member of our Editorial Board, the Open Journal of Astrophysics now has a Wikipedia page.

https://www.europesays.com/ie/420345/ Vera C. Rubin Observatory Discovers Over 11,000 New Asteroids #2025LS2 #2025MX348 #Asteroid #Éire #IE #Ireland #NearEarthAsteroid #NearEarthObject #Science #SolarSystem #Space #TransNeptunianObject #VeraCRubinObservatory

https://www.europesays.com/ie/418991/ Rubin Observatory Spots Over 11,000 Asteroids in Record Haul #Asteroids #Éire #IE #Ireland #Science #Space #VeraCRubinObservatory

https://www.europesays.com/uk/791719/ Astronomers Wake Up to 800,000 Notifications From Observatory Watching the Night Skies #Asteroids #Science #Space #UK #UnitedKingdom #VeraCRubinObservatory #VeraRubin

https://www.europesays.com/ie/358315/ Astronomers Wake Up to 800,000 Notifications From Observatory Watching the Night Skies #Asteroids #Éire #IE #Ireland #Science #Space #VeraCRubinObservatory #VeraRubin

Rubin Observatory spots an #asteroid that spins fast enough to set a record
The asteroid, known as #2025MN45, is nearly half a mile (710 meters) in diameter and makes a full rotation every 1.88 minutes, based on an analysis of data from the #VeraCRubinObservatory in #Chile.
2025 MN45 is one of more than 2,100 solar system objects detected during the observatory’s commissioning phase. Over time, the #LSST Camera tracked variations in the light reflected by those objects.
https://www.geekwire.com/2026/rubin-observatory-asteroid-spins-fast-record/

Ich schaue immer mal wieder auf der Skyviewer App (https://skyviewer.app), ob das Vera C. Rubin Observatorium inzwischen mehr Bilder zeigt. Seit Juni 2025 ist da nichts passiert. Ich dachte, ab Dezember sollte Nachschub kommen. Weiß jemand genaueres? Ich kann's kaum abwarten...
#skyviewer #veracrubinobservatory

Record-Breaking Fastest Spinning Asteroid Size Of 8 Football Fields Spotted By Rubin; Is It A Threat To Earth?

https://web.brid.gy/r/https://in.mashable.com/science/104443/record-breaking-fastest-spinning-asteroid-size-of-8-football-fields-spotted-by-rubin-is-it-a-threat

Weekly Update from the Open Journal of Astrophysics – 12/07/2025

It’s Saturday morning again, so it’s time again for an update of papers published at the Open Journal of Astrophysics. Since the last update we have published seven new papers, which brings the number in Volume 8 (2025) up to 92, and the total so far published by OJAp  up to 327.

This was a slightly strange week, starting with the fact that there were no new arXiv announcements on Monday 7th July because of the 4th July holiday in the USA on Friday so no papers were published that day. We were not able to publish any papers on Wednesday 9th July either because Crossref was offline for 24 hours that day while its data was migrated into the cloud. Our publishing process requires a live connection with Crossref to deposit metadata upon publication so we can’t publish while that service is down. Fortunately the update seems to have gone well and normal services resumed the following day. That partially accounts for the fact that four of this week’s papers were published on 10th July.

Anyway, The papers published this week, with their overlays, are as follows.  You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is “The Jackknife method as a new approach to validate strong lens mass models” by Shun Nishida & Masamune Oguri (Chiba University, Japan) , Yoshinobu Fudamoto (Steward Observatory, USA) and Ayari Kitamura (Tohoku University, Japan). This article, which is in the folder marked Cosmology and NonGalactic Astrophysics,  describes and application of the Jackknife statistical resampling techique to gravitational lensing by removing lensed images and recalcualting the mass modelIt was published on Tuesday 8th July 2025. The overlay is here:

The officially-accepted version can be found on arXiv here.

The second paper is “Low redshift post-starburst galaxies host abundant HI reservoirs” by Sara Ellison (U. Victoria, Canada) and 10 others based in China, UK, Spain, USA and Canada.  This one was also published oon Tuesday 8th July but in the folder Astrophysics of Galaxies. This paper uses 21cm observations of a sample of post-starburst galaxies, to show  that they contain large reservoirs of neutral hydrogen. Here is the overlay:

You can find the final version of the manuscript on arXiv here.

Next one up, one of four published on Thursday 10th July, is “Predicting the number density of heavy seed massive black holes due to an intense Lyman-Werner field” by Hannah O’Brennan (Maynooth University, Ireland) and 7 others based in Ireland, USA and Italy. This paper presents an exploration of the scenario for black hole formation driven by Lyman-Werner photons (i.e. ultraviolet radiation in the range 11.2 to 13.6 eV). It is in the folder marked Cosmology and NonGalactic Astrophysics, and the overlay is here:

You can read the final accepted version on arXiv here.

The fourth paper this week, and the second published on 10th July, is “Chemical Abundances in the Metal-Poor Globular Cluster ESO 280-SC06: A Formerly Massive, Tidally Disrupted Globular Cluster” by Sam A. Usman (U. Chicago, USA) and 8 others based in the USA, Canada and Australia. This paper, which is in the folder Astrophysics of Galaxies, presents a detailed spectroscopic study of the chemical abundances in a Milky Way globular cluster ESO 280-SC06. The overlay is here:

The officially accepted version of the paper can be read here.

Next one up, also published on 10th July and also in the folder marked Astrophysics of Galaxies is “Predictions for the Detectability of Milky Way Satellite Galaxies and Outer-Halo Star Clusters with the Vera C. Rubin Observatory” by Kabelo Tsiane (U. Michigan) and 9 others on behalf of the LSST Dark Energy Science Collaboration.

The overlay is here:

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

The penultimate paper for this week, and the last of the batch published on 10th July,  is “Systematically Measuring Ultra-Diffuse Galaxies. VIII. Misfits, Miscasts, and Miscreants” by Dennis Zaritsky, Richard Donnerstein, and Donghyeon J. Khim (Steward Observatory, U. Arizona, USA). This paper presents a morphological study of weird and wonderful galaxies as part of an effort to Systematically Measure Ultra-Diffuse Galaxies (the SMUDGes survey). It is in the folder marked Astrophysics of Galaxies. The overlay is here:

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

The last article published this week is “Differential virial analysis: a new technique to determine the dynamical state of molecular clouds” by Mark R. Krumholz (ANU, Australia), Charles J. Lada (Harvard, USA) & Jan Forbrich (U. Herts, UK). This paper presents simple analytic models of supported and collapsing molecular clouds, tested using full 3D simulations and applied to observed clouds in Andromeda. It is in the folder marked Astrophysics of Galaxies and was published yesterday, i.e on Friday 11th July 2025. Here is the overlay

You can find the officially-accepted version on arXiv here.

And that’s all the papers for this week. I will, however, take this opportunity to mention that a while ago I was interviewed about the Open Journal of Astrophysics by Colin Stuart on behalf of the Foundational Questions Institute; the write-up of the interview can be found here.

#arXiv250116474v2 #arXiv250200574v2 #arXiv250303066v2 #arXiv250416203v2 #arXiv250500553v2 #arXiv250524755v2 #arXiv250615664v2 #AstrophysicsOfGalaxies #blackHoles #chemicalAbundances #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #differentialVirialAnalysis #globularCluster #JackknifeResampling #LymanWernerRadiation #massiveBlackHoles #MilkyWay #OpenJournalOfAstrophysics #SMUDgesSurvey #StatelliteGalaxies #strongGravitationalLensing #TheOpenJournalOfAstrophysics #ultraDiffuseGalaxies #VeraCRubinObservatory

The new @VRubinObs has started providing massive amounts of detail in its space images. Citizen science opportunities will be coming.
#VeraCRubinObservatory #CitizenScience #astronomy #space
https://www.youtube.com/watch?v=QPVcG8TZ8Wg

First Rubin Observatory images released amid concerns about budget cuts

https://fed.brid.gy/r/https://spacenews.com/first-rubin-observatory-images-released-amid-concerns-about-budget-cuts/

The new telescope's superpower is its wide view.

"[The Vera C. Rubin Observatory] can image 9.6 square degrees at a time—about 45 full moons’ worth of sky.
[...]
Every night, the telescope will take a thousand images, one every 34 seconds. After three or four nights, it’ll have the entire southern sky covered, and then it’ll start all over again."

https://spectrum.ieee.org/vera-rubin-observatory-first-images

#VeraCRubinObservatory #Telescopes #Space #Observations #Imaging

New telescope supported by the US National Science Foundation & the Department of Energy ushers in a new age of space observation with stunning images of the cosmos

Perched high in Chile’s Andes Mountains, the Observatory's digital camera captures extremely fine features in distant galaxies and "will capture more information about our universe than all optical telescopes throughout history combined"

https://scitechdaily.com/worlds-largest-space-camera-snaps-breathtaking-first-photos-of-the-universe/

#VeraCRubinObservatory #telescope #Chile #universe

Dr Kirsten Banks video about the first images from the Vera C. Rubin telescope.

10-minute video: https://youtu.be/7KskskdLfFo

#Astronomy #VeraCRubinObservatory

Lovely details from the first look/first light-press conference (apart from the obviously impressive science behind it) from #veracrubinobservatory

🚀🔭 "Oh wow, the Vera C. Rubin Observatory took its 'first images'—because the universe was just waiting for us to finally snap a selfie. 😜😴 But hey, now you can join the '3200-Megapixel Group Photo' and prove that you were there when the cosmos posed for a close-up. 📸🙄"
https://rubinobservatory.org/news/rubin-first-look/cosmic-treasure-chest #VeraCRubinObservatory #SpacePhotography #UniverseSelfie #AstronomyNews #CosmicGroupPhoto #HackerNews #ngated

Hands-On at the Vera C. Rubin Observatory and Its First Enormous 5 Gigapixel Image https://petapixel.com/2025/06/23/hands-on-at-the-vera-c-rubin-observatory-and-its-first-enormous-5-gigapixel-image/ #veracrubinobservatory #astrophotography #rubinobservatory #lsstcamera #Spotlight #asteroids #astronomy #spotlight #telescope #Features #features #galaxies #science #cosmos #Space #chile #space #lsst

Die ersten Bilder des Vera C. Rubin Observatory wurden der Öffentlichkeit vorgestellt. Allein schon die technischen Daten des Teleskops sind atemberaubend, gar nicht zu sprechen von den wissenschaftlichen Entdeckungen, die durch die Beobachtungen zu erhoffen sind.

#VeraCRubinObservatory #Astronomie #Astronomy #RubinObservatory

rubinobservatory.org/news/firs…

The World’s Largest Camera Captures 10 Million Galaxies, Discovers 2,104 Asteroids in First Photos https://petapixel.com/2025/06/23/the-worlds-largest-camera-captures-10-million-galaxies-discovers-2104-asteroids-in-first-photos/ #veracrubinobservatory #astrophotography #rubinobservatory #lsstcamera #asteroids #astronomy #telescope #galaxies #science #cosmos #Space #space #News #lsst

Vera C. Rubin Observatory “First Look” Images

Just a quick note to say that the “first look” images from the Vera C. Rubin Observatory will be revealed at 11am (Eastern Daylight Time; 4pm local Irish Time). This is the live stream:

https://www.youtube.com/live/Zv22_Amsreo

I understand there will be a watch party at the EAS meeting in Cork, but I will be on the train so I’ll miss it.

A few images have been released already as a sneak preview. Here is one, to whet your appetitite:

#Cosmology #RubinLSST #VeraCRubinObservatory #VirgoCluster

Vera C. Rubin Observatory releases stunning new images : NPR

Short Wave

Science

The Vera C. Rubin Observatory’s first images are stunning — and just the start June 23, 202512:01 AM ET

By Nell Greenfieldboyce

This image combines 678 separate images taken by NSF-DOE Vera C. Rubin Observatory in just over seven hours of observing time. Combining many images in this way clearly reveals A powerful new observatory has unveiled its first images to the public, showing off what it can do as it gets ready to start its main mission: making a vivid time-lapse video of the night sky that will let astronomers study all the cosmic events that occur over ten years. “As the saying goes, a picture is worth a thousand words. But a snapshot doesn’t tell the whole story. And what astronomy has given us mostly so far are just snapshots,” says Yusra AlSayyad, a Princeton University researcher who oversees image processing for the Vera C. Rubin Observatory.

Read more: Vera C. Rubin Observatory releases stunning new images : NPR

Source Links: Vera C. Rubin Observatory releases stunning new images : NPR

#2025 #America #History #Images #Libraries #NASA #NPR #Science #Space #Technology #UnitedStates #VeraCRubinObservatory

https://www.bbc.com/news/articles/cj3rmjjgx6xo

New telescope to help us better understand the universe we live in.

#astronomy #telescope #veracrubinobservatory

These Are the First Images Captured by the Largest Camera Ever Made https://petapixel.com/2025/06/22/these-are-the-first-images-captured-by-the-largest-camera-ever-made/ #veracrubinobservatory #3200megapixels #observatory #worldrecord #darkenergy #lsstcamera #astronomy #firstlook #telescope #universe #science #galaxy #Space #chile #space #News #lsst #doe #nsf

Is there anybody out there? The Vera C. Rubin Observatory in Chile is trying to answer the perennial question of if we're alone in the universe, using the world's largest digital camera to scan the southern sky every three to four nights for at least a decade. "In the first month of the survey alone, it could double the number of known small bodies in our Solar System, spotting asteroids much farther out than ever before," Big Think reports. As to extra terrestrial life and technology, it may get us closer to finding if they exist — unless they happen to be hanging out above the northern hemisphere.

https://flip.it/1WRqfT

#Science #Space #Technology #Chile #VeraCRubinObservatory #ExtraterrestrialLife

Weekly Update from the Open Journal of Astrophysics – 19/04/2025

It may be the Easter holiday weekend, but it’s still time for the weekly Saturday morning update of papers published at the Open Journal of Astrophysics. Since the last update we have published five new papers, which brings the number in Volume 8 (2025) up to 42 and the total so far published by OJAp up to 277.

In chronological order of publication, the five papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is “Galaxy Clustering with LSST: Effects of Number Count Bias from Blending” by Benjamin Levine (Stony Brook, NY), Javier Sánchez (STScI, MD), Chihway Chang (Chicago, IL) Anja von der Linden (Stony Brook), Eboni Collins (Dillard, LA), Eric Gawiser (Rutgers, NJ), Katarzyna Krzyżańska (Cornell, NY), Boris Leistedt (Imperial College, UK) on behalf of the LSST Dark Energy Science Collaboration.

This presents a simulation-based study of the effect of source overlaps (blending) on galaxy counts expected for the Vera C. Rubin Legacy Survey of Space and Time (LSST). The paper is in the folder Cosmology and NonGalactic Astrophysics and was published on Monday 14th April 2025. The overlay is here:

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

The second paper to announce, published onTuesday 15th April 2025,  “Rapid, strongly magnetized accretion in the zero-net-vertical-flux shearing box” by Jonathan Squire (Otago, New Zealand), Eliot Quataert (Princeton, USA) & Philip F. Hopkins (Caltech, USA). This  paper presents a numerical study of turbulence in a flux shearing box, with discussion of the implications of the results for global accretion disk models and simulations thereof. It was published in the folder High-Energy Astrophysical Phenomena and the overlay is here:

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

The third paper of the week, published on Wednesday April 16th 2025,   is “DeepDISC-photoz: Deep Learning-Based Photometric Redshift Estimation for Rubin LSST” by Grant Merz (University of Illinois at Urbana-Champaign, USA) and 13 others (all based in the USA) on behalf of the LSST Dark Energy Science Collaboration. This paper describes adding photometric redshift estimation to the DeepDISC framework for classification objects in co-added images for use with the Vera C. Rubin LSST survey. It can be found in the folder Instrumentation and Methods for Astrophysics.

Here is the overlay:

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

The next one to report is “Multidimensional Nova Simulations with an Extended Buffer and Lower Initial Mixing Temperatures” by Alexander Smith Clark and Michael Zingale (Stony Brook University, NY, USA). This paper presents new computer models of classical novae with improved ability to follow nucleosynthesis in the thermonuclear outburst and better treatment of convective transport. This one was also published on Wednesday 16th April 2025 but in the folder Solar and Stellar Astrophysics.

Here is the overlay:

The official published version can be found on the arXiv here.

The last paper of the five published this week is “Measurement of the power spectrum turnover scale from the cross-correlation between CMB lensing and Quaia” by David Alonso (Oxford, UK), Oleksandr Hetmantsev (Kyiv, Ukraine), Giulio Fabbian (Cambridge, UK), Anze Slosar (Brookhaven National Laboratory, USA) and Kate Storey-Fisher (Stanford, USA). This is a discussion of using the spatial correlations of quasars and their cross-correlations with cosmic microwave background lensing data to measure a feature corresponding to the matter-radiation equality scale with consequences for cosmological parameter estimation. It was published on Thursday 17th April 2025 in the folder Cosmology and NonGalactic Astrophysics.

The overlay is here:

You can find the officially accepted version on arXiv here.

That’s all the papers for this week. I’ll just add a couple of things.

One is that, although there have been weeks before in which we have published five or more papers, we still haven’t managed to have a week on which we’ve published a paper on every weekday. This week we had two on Wednesday 16th but didn’t have any yesterday (Friday).

The second is that tt has been a while since I last posted a breakdown of the running costs here at the Open Journal of Astrophysics. Today I received an email from Scholastica, our service provider, reminding me our costs will go up shortly (from 22nd April). In the interest of transparency I am passing this information on here.

The new prices will be as follows:

• Peer Review System annual cost will be $425/year (was $350/year) plus $10 per submission (no change)
• OA Publishing Platform annual cost will be $1,499/year (was $1,399/year)

Last year we published 120 papers with about 250 submissions. We’re a bit ahead of that this year, so I estimate that our next year’s costs will be a bit less than $5000. That’s still less than the typical APC for a single paper at many journals.

I hope this clarifies the situation.

#arXiv240905467v3 #arXiv241024134v3 #arXiv241114564v2 #arXiv241118769v2 #arXiv250300595v2 #CMBLensing #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccessPublishing #fluxShearing #HighEnergyAstrophysicalPhenomena #InstrumentationAndMethodsForAstrophysics #magnetizedAccretion #Nova #OpenJournalOfAstrophysics #Quaia #quasars #SolarAndStellarAstrophysics #StellarModels #TheOpenJournalOfAstrophysics #VeraCRubinObservatory

World’s Largest Camera is Ready to Take Its First 3,200-Megapixel Photos of the Universe https://petapixel.com/2025/03/14/worlds-largest-camera-is-ready-to-take-its-first-3200-megapixel-photos-of-the-universe/ #veracrubinobservatory #worldrecord #lsstcamera #astronomy #telescope #universe #science #galaxy #Space #chile #News #lsst #doe #nsf

As the night sky grows crowded, astronomers face a growing problem

https://fed.brid.gy/r/https://spacenews.com/as-the-night-sky-grows-crowded-astronomers-face-a-growing-problem/

The Biggest Digital Camera Ever Made: 6,600 Pounds and 3,200 Megapixels https://petapixel.com/2024/04/20/the-biggest-digital-camera-ever-made-6600-pounds-and-3200-megapixels/ #analogastrophotography #veracrubinobservatory #astronomers #worldrecord #lsstcamera #Spotlight #spotlight #telescope #Features #biggest #feature #science #space #lsst

The Biggest Digital Camera Ever Is Ready to Solve Cosmic Mysteries 3,200 Megapixels At a Time https://petapixel.com/2024/04/03/the-biggest-camera-ever-is-ready-to-solve-cosmic-mysteries-3200-megapixels-at-a-time/ #veracrubinobservatory #3200megapixels #observatory #Technology #darkenergy #lsstcamera #astronomy #universe #science #galaxy #Space #space #News #lsst

Photographer’s Mind-Boggling 360 Image of Observatory Where World’s Largest Camera Will Live https://petapixel.com/2024/01/22/photographers-mind-boggling-360-image-of-observatory-where-worlds-largest-camera-will-live/ #veracrubinobservatory #milkywaygalaxy #lsstcamera #astronomy #Space