Live and recent posts from across the Fediverse tagged #gravitational-lensing, aggregated by home.social.
IC 348 Crop: Gravitational lensing ✨
#canadianspaceagency #cosmos #csa #esa #esawebb #europeanspaceagency #gravitationallensing #jameswebb
▶️ 1 new picture from ESA (Flickr) https://commons.wikimedia.org/wiki/File:IC_348_Crop-_Gravitational_lensing_%2855530253528%29.jpg
📣 New Research Highlight:
Prisms and mirrors for gravitational waves: Modified gravity could allow matter to disperse, or even reflect, gravitational waves
➡️ https://www.aei.mpg.de/1508860/Prisms-and-mirrors-for-gravitational-waves
Researchers at the AEI, Humboldt University, and Imperial College London have explored the lens-induced dispersion of gravitational waves, a phenomenon by which the matter distribution can split a signal by its frequency components, analogous to a prism forming a rainbow out of white light. Their results highlight the potential of gravitational-wave lensing for constraining modified gravity, a timely result because of increasing cosmological evidence that dark energy evolves dynamically.
📣 New Research Highlight:
Listening to the stars beneath the waves: A new reduced-order model makes the complex diffraction of gravitational waves by stellar fields accessible to data analysis.
➡️ https://www.aei.mpg.de/1507473/listening-to-the-stars-beneath-the-waves
This study was recently published in Physical Review D and selected as an Editor's Suggestion.
New in the #VirtualObservatory: “PRIME 1st results: Microlensing candidates from 2024” by Sumi T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/170/338
#GravitationalLensing #Exoplanets #InfraredPhotometry
#CitizenScience afficionados, #Euclid scientists would like to again solicit your input for classifying #GravitationalLensing systems. We need a sprint finish before the science analysis can be completed. 18000 galaxies that are maybe acting as lenses are waiting for your eyes and brains.
Do you want to join?
All the background is here:
New in the #VirtualObservatory: “Euclid Q1 strong gravitational lens” by Euclid Coll. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/712/A207
#InfraredAstronomy #VisibleAstronomy #Photometry #GravitationalLensing
New in the #VirtualObservatory: “r-band LCs of a doubly imaged lensed SDSS quasar” by Rivera A.B. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/964/173
#Photometry #GravitationalLensing #Quasars #VisibleAstronomy
If I know any astrophysicists: I was reading a brief news blurb about the Max Planck Institute's interpretation of data from the Arctic IceCube Neutrino Observatory, that led them to conclude they were observing a blazar with gravitational lensing due to dark matter.
And a random question occurred to me. What's the interaction between dark matter and black holes? I don't recall reading anything about this over the years. I'm wondering if it forms a normal accretion disk, and if we can see the radiation from that, or if not, what does actually happen. Can black holes "eat" dark matter or no?
#curiosity #astrophysics #BlackHole #blazar #DarkMatter #GravitationalLensing #neutrino
https://www.europesays.com/ie/644507/ Roman Series: Jupiters Around Other Suns #&BlackHolesResearch #astrophysics #AstrophysicsDivision #BlackHoles #Éire #ElectromagneticSpectrum #ExoplanetScience #Galaxies #GoddardSpaceFlightCenter #GravitationalLensing #HubbleSpaceTelescope #IE #InfraredLight #Ireland #JamesWebbSpaceTelescope(JWST) #JetPropulsionLaboratory #NancyGraceRomanSpaceTelescope #podcasts #Science #ScienceMissionDirectorate #Space #stars #StudyingExoplanets #UltravioletLight #Visible/OpticalLight
5 Celestial Wonders In The Largest 2D Map of Universe Created By DESI Legacy Imaging Survey: In Pics
5 Celestial Wonders In The Largest 2D Map of Universe Created By DESI Legacy Imaging Survey: In Pics
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!
#airShowers #arXiv260114887v3 #arXiv260413154v2 #arXiv260424908v2 #arXiv260505004v2 #AstrophysicsOfGalaxies #CircumgalacticMedium #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #GalacticOutflows #GravitationalLensing #highEnergyCosmicRays #HubbleSpaceTelescope #hydrodynamicSimulations #InstrumentationAndMethodsForAstrophysics #OpenAccess #OpenAccessPublishing #peculiarVelocities #quasars #starFormingGalaxy #structureFunctions #Turbulence #ultraHighEnergyCosmicRays
Are you interested in #CitizenScience?
Do you like images of #galaxies and #GravitationalLensing?
Then this is for you: the next installment of #Spacewarps using #ESAEuclid images
https://www.zooniverse.org/projects/aprajita/space-warps-esa-euclid
A beam of light can cross the entire universe in no time at all
A photon can cross a billion light-years …
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #AlbertEinstein #Astrophysics #atomicclocks #GeneralRelativity #GPSsatellites #gravitationallensing #Hafele-Keatingexperiment #HermannMinkowski #lightclock #lightspeed #nullpath #photon #propertime #Research #Science #SpaceNews #Spacetime #specialrelativity #speedoflight #timedilation
https://www.newsbeep.com/us/799849/
A beam of light can cross the entire universe in no time at all
A photon can cross a billion light-years while accumulating no elaps…
#NewsBeep #News #Physics #alberteinstein #Astrophysics #atomicclocks #generalrelativity #GPSsatellites #gravitationallensing #Hafele-Keatingexperiment #HermannMinkowski #lightclock #LightSpeed #nullpath #Photon #propertime #research #Science #SpaceNews #Spacetime #specialrelativity #speedoflight #timedilation #UK #UnitedKingdom
https://www.newsbeep.com/uk/724864/
https://www.europesays.com/uk/1126510/ A beam of light can cross the entire universe in no time at all #AlbertEinstein #Astrophysics #AtomicClocks #GeneralRelativity #GPSSatellites #GravitationalLensing #HafeleKeatingExperiment #HermannMinkowski #LightClock #LightSpeed #NullPath #Photon #Physics #ProperTime #Research #Science #SpaceNews #spacetime #SpecialRelativity #SpeedOfLight #TimeDilation #UK #UnitedKingdom
A beam of light can cross the entire universe in no time at all
A photon can cross a billion light-years while accumulating no elapsed time…
#NewsBeep #News #Physics #AlbertEinstein #Astrophysics #atomicclocks #CA #Canada #generalrelativity #GPSsatellites #gravitationallensing #Hafele-Keatingexperiment #HermannMinkowski #lightclock #lightspeed #nullpath #Photon #propertime #research #Science #SpaceNews #Spacetime #specialrelativity #speedoflight #timedilation
https://www.newsbeep.com/ca/842996/
https://www.europesays.com/ie/617041/ A beam of light can cross the entire universe in no time at all #AlbertEinstein #astrophysics #AtomicClocks #Éire #GeneralRelativity #GPSSatellites #GravitationalLensing #HafeleKeatingExperiment #HermannMinkowski #IE #Ireland #LightClock #LightSpeed #NullPath #Photon #Physics #ProperTime #Research #Science #SpaceNews #Spacetime #SpecialRelativity #SpeedOfLight #TimeDilation
A beam of light can cross the entire universe in no time at all
A photon can cross a billion light-years while accumulating no elapsed time along…
#NewsBeep #News #Science #AlbertEinstein #Astrophysics #atomicclocks #AU #Australia #generalrelativity #GPSsatellites #gravitationallensing #Hafele-Keatingexperiment #HermannMinkowski #lightclock #LightSpeed #nullpath #Photon #propertime #research #SpaceNews #Spacetime #specialrelativity #speedoflight #timedilation
https://www.newsbeep.com/au/840049/
New in the #VirtualObservatory: “20yr phot. observations of the SMC with OGLE” by Mroz P. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/280/49
#InfraredPhotometry #VisibleAstronomy #GravitationalLensing #Photometry
Bullet Cluster Confirmed 10:1 Minor Merger: JWST Ends Two Decades of Dispute
The James Webb Space Telescope has definitively resolved one of astrophysics’ most contested measurements: a new joint analysis…
#NewsBeep #News #Science #BulletCluster #CA #Canada #darkmatter #darkmatterself-interaction #galaxyclustermerger #gravitationallensing #jwst #NASA #RomanSpaceTelescope
https://www.newsbeep.com/ca/786345/
https://www.europesays.com/uk/1073192/ Ghost particle detected beneath Antarctica leads scientists to hidden galaxy 11 billion light years away | #AntarcticaNeutrinoDetection #GhostParticles #GravitationalLensing #HighEnergyNeutrinos #IC210922A #NeutrinoAstronomy #Physics #Science #ShadowBlasterGalaxy #StarFormingGalaxies #UK #UnitedKingdom
New in the #VirtualObservatory: “KiDS grav. lenses obscured by foreground light” by Liu S. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/710/A366
#VisibleAstronomy #Galaxies #GravitationalLensing
New in the #VirtualObservatory: “ACO 746 analysis with Subaru & MMT spectra data” by HyeongHan K. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/962/100
#GalaxyClusters #Spectroscopy #Galaxies #GravitationalLensing
https://www.europesays.com/ie/564512/ Ghost particle detected beneath Antarctica leads scientists to hidden galaxy 11 billion light years away | #AntarcticaNeutrinoDetection #Éire #GhostParticles #GravitationalLensing #HighEnergyNeutrinos #IC210922A #IE #Ireland #NeutrinoAstronomy #Physics #Science #ShadowBlasterGalaxy #StarFormingGalaxies
Ghost particle detected beneath Antarctica leads scientists to hidden galaxy 11 billion light years away |
A tiny particle that barely interacts with anything in the universe has helped scientists solve one of astronomy’…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #Antarcticaneutrinodetection #ghostparticles #gravitationallensing #high-energyneutrinos #IC210922A #neutrinoastronomy #Science #ShadowBlastergalaxy #star-forminggalaxies
https://www.newsbeep.com/us/737864/
Ghost particle detected beneath Antarctica leads scientists to hidden galaxy 11 billion light years away |
A tiny particle that barely interacts with anything in the universe has helped scientists solve one of astronomy’s…
#NewsBeep #News #Physics #Antarcticaneutrinodetection #CA #Canada #ghostparticles #gravitationallensing #high-energyneutrinos #IC210922A #neutrinoastronomy #Science #ShadowBlastergalaxy #star-forminggalaxies
https://www.newsbeep.com/ca/774008/
New in the #VirtualObservatory: “JWST Bullet Cluster redshifts and spectra” by Rihtarsic G. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/710/A207
#GravitationalLensing #GalaxyClusters #InfraredAstronomy #Redshifted
New in the #VirtualObservatory: “Wide-sep. lensed QSOs + dual-QSO cand. from CatNorth” by Wu D. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/710/A180
#GravitationalLensing #VisibleAstronomy #Quasars #GalaxyClusters
https://www.europesays.com/at/215360/ Little Red Dots: Webb liefert stärksten Hinweis auf frühe Schwarze Löcher #Astronomy #astrophysics #AT #Austria #BlackHole #DataAnalysis #EarlyUniverse #Emission #Galaxy #GravitationalLensing #Hydrogen #JamesWebb #Österreich #Oxygen #Science #Science&Technology #Spectra #Technik #Technology #Wissenschaft #Wissenschaft&Technik
New in the #VirtualObservatory: “New BgVrRI light curves of QSO 2237+0305” by Shalyapin V.N. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/710/A70
#GravitationalLensing #Quasars #VisibleAstronomy #CcdPhotometry
https://www.europesays.com/ie/522461/ Chinese black hole-hunting scientist Dai Liang quits US for Shanghai post #AlfredPSloanFoundation #AlfredSloan #Berkeley #BlackHoles #ChinaSkyEyeFAST #DaiLiang #Éire #FudanUniversity #GravitationalLensing #IE #Ireland #MilkyWay #Science #Space
https://www.europesays.com/uk/988861/ NASA’s Webb Reveals Black Hole That Formed Before Its Galaxy #Astrophysics #BlackHoles #Galaxies #GoddardSpaceFlightCenter #GravitationalLensing #JamesWebbSpaceTelescope(JWST) #Science #Science&Research #TheUniverse #UK #UnitedKingdom
https://www.europesays.com/ie/505389/ NASA’s Webb Reveals Black Hole That Formed Before Its Galaxy #astrophysics #BlackHoles #Éire #Galaxies #GoddardSpaceFlightCenter #GravitationalLensing #IE #Ireland #JamesWebbSpaceTelescope(JWST) #Science #Science&Research #Space #TheUniverse
https://www.europesays.com/ie/480412/ Microlensing Event at OGLE-2013-BLG-0341 (Hubble Image) #Éire #GravitationalLensing #HubbleSpaceTelescope #IE #Ireland #NancyGraceRomanSpaceTelescope #Science #Space #stars #TheMilkyWay
Hubble Survey Sets Up Roman’s Future Look Near Milky Way’s Center
This VISTA VVV Survey image shows the galactic bulge near Sagittarius A*, the supermassive black hole at the…
#NewsBeep #News #Space #Astrophysics #AstrophysicsDivision #CA #Canada #Exoplanets #GoddardSpaceFlightCenter #gravitationallensing #HubbleSpaceTelescope #NancyGraceRomanSpaceTelescope #Science #Stars #TheMilkyWay
https://www.newsbeep.com/ca/662536/
Hubble Survey Sets Up Roman’s Future Look Near Milky Way’s Center
This VISTA VVV Survey image shows the galactic bulge near Sagittarius A*, the supermassive black hole at the…
#NewsBeep #News #Space #Astrophysics #AstrophysicsDivision #exoplanets #GoddardSpaceFlightCenter #gravitationallensing #HubbleSpaceTelescope #NancyGraceRomanSpaceTelescope #Science #stars #TheMilkyWay #UK #UnitedKingdom
https://www.newsbeep.com/uk/578250/
https://www.europesays.com/ie/479311/ Hubble Survey Sets Up Roman’s Future Look Near Milky Way’s Center #astrophysics #AstrophysicsDivision #Éire #Exoplanets #GoddardSpaceFlightCenter #GravitationalLensing #HubbleSpaceTelescope #IE #Ireland #NancyGraceRomanSpaceTelescope #Science #Space #stars #TheMilkyWay
Discover how Einstein Rings, formed by gravitational lensing, magnify distant galaxies and reveal cosmic structures at the edge of the observable universe.
#EinsteinRings #GravitationalLensing #CosmicMagnifyingGlass #Astrophysics
https://www.scientificworldinfo.com/2026/04/how-do-einstein-rings-help-us-see-edge-of-universe.html
New in the #VirtualObservatory: “~100 Gravitationally confirmed lensed quasars” by Lemon C. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/520/3305
#GravitationalLensing #Galaxies #Spectroscopy #VisibleAstronomy
Would you like to be part of citizen science astronomy? We invite you to classify gravitational lens candidates in so-far unreleased #ESAEuclid data: "Space Warps – ESA Euclid DR1".
3000 volunteers have already made nearly 900,000 classifications, yet 70% of the project are still to be done.
All the background and link to the Zooniverse: https://www.zooniverse.org/projects/aprajita/space-warps-esa-euclid
#ESA #Euclid #astronomy #GravitationalLensing #science #CitizenScience.
New dark matter model explains three cosmic mysteries across universe
A new study led by researchers at the University of California, Riverside, suggests that a different type of…
#NewsBeep #News #Physics #Astrophysics #AU #Australia #Cosmology #darkmatter #galaxies #gravitationallensing #gravothermalcollapse #Science #SIDM #stellarstreams
https://www.newsbeep.com/au/608361/
New dark matter model explains three cosmic mysteries across universe
A new study led by researchers at the University of California, Riverside, suggests that a different type of…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #Astrophysics #Cosmology #Darkmatter #galaxies #gravitationallensing #gravothermalcollapse #Science #SIDM #stellarstreams
https://www.newsbeep.com/us/584852/
https://www.europesays.com/ie/?p=435370 New dark matter model explains three cosmic mysteries across universe #astrophysics #cosmology #DarkMatter #Éire #Galaxies #GravitationalLensing #GravothermalCollapse #IE #Ireland #Science #SIDM #Space #StellarStreams
Mega Laser Beam Signal: Astronomers detect mega-laser beam signal from 8 billion light-years away |
One of the most remarkable discoveries made by astronomers in recent years is the identification of an extremely…
#NewsBeep #News #Physics #astronomydiscoveries #gravitationallensing #HATLASJ142935.3–002836 #hydroxylmegamaser #mega-lasersignal #radiotelescope #Science #spacesignals #supermassiveblackholes #UK #UnitedKingdom
https://www.newsbeep.com/uk/528560/
Discover how Einstein Rings, formed by gravitational lensing, allow us to see deeper into space and uncover cosmic mysteries.
#EinsteinRings #SpaceExploration #Astronomy #GravitationalLensing #DeepSpace #Astrophysics
https://www.scientificworldinfo.com/2026/04/how-do-einstein-rings-help-us-see-edge.html
New in the #VirtualObservatory: “Gaia GraL. X.” by Ducourant C. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A345
#GravitationalLensing #Redshifted #Quasars #VisibleAstronomy
New in the #VirtualObservatory: “Lensing/SED-fit of 78 high-z RELICS galaxies” by Neufeld C. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/516/2162
#Astrometry #StellarMasses #Galaxies #GravitationalLensing
What if gravity bends light like a cosmic magnifying glass?
Explore gravitational lensing here
#Gravitationallensing #cosmology #physics #Einstein #universe
ASTRONOMY MILESTONE: Scientists have solved the 'mass-distance degeneracy' problem, using #GravitationalLensing observed from Earth & the #Gaia space telescope to pinpoint a #RoguePlanet's exact mass & location. The Saturn-sized object, 9,785 light-years away, was likely violently ejected from its star system. This confirms theories of a vast, hidden population of nomadic planets & opens a new era for #Astronomy with upcoming telescopes like #nancygraceroman
Astronomers spot 2 ‘time-warped’ supernovas whose light both has and hasn’t reached Earth
When you buy through links on our articles, Future and its syndication partners may earn a commission. The…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Space #ConorLarison #galaxycluster #ghostlyimages #gravitationallensing #HubbleSpaceTelescope #JamesWebbSpaceTelescope #multipleimages #Science #supernovas
https://www.newsbeep.com/us/442907/
AI Unlocks Hundreds of Cosmic Anomalies in Hubble Archive https://science.nasa.gov/missions/hubble/ai-unlocks-hundreds-of-cosmic-anomalies-in-hubble-archive/ #NASA #ArtificialIntelligenceAI #Astrophysics #AstrophysicsDivision #Galaxies #GoddardSpaceFlightCenter #GravitationalLensing #HubbleSpaceTelescope #IrregularGalaxies #OriginEvolutionOfTheUniverse #TheUniverse
AI Unlocks Hundreds of Cosmic Anomalies in Hubble Archive https://science.nasa.gov/missions/hubble/ai-unlocks-hundreds-of-cosmic-anomalies-in-hubble-archive/ #NASA #Astrophysics #AstrophysicsDivision #Galaxies #GoddardSpaceFlightCenter #GravitationalLensing #HubbleSpaceTelescope #IrregularGalaxies #OriginEvolutionOfTheUniverse #TheUniverse
New in the #VirtualObservatory: “TDCOSMO XXI SL2S spectra for accurate vel. disp.” by Mozumdar P. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/705/A13
#GravitationalLensing #Galaxies #InfraredAstronomy #VisibleAstronomy
R.I.P. Yannick Mellier (1958-2025)
Last night I received a message via the Euclid Consortium conveying the very sad news of the death, at the age of 67, of the French astrophysicist and cosmologist Yannick Mellier (pictured left). Among many other things, Yannick was the Euclid Consortium Lead in which role he took on enormous responsibility for getting the project started and, with his team, keeping everything running. His loss is incalculable.
Yannick’s research work focussed on cosmology and the search for dark matter using gravitational lensing. Back in 1987 he was part of the observational team that discovered the first giant arc produced by strong gravitational lensing. He also did pioneering work in the field of weaking gravitational lensing with the Canada-France Hawaii Telescope in that regard starting back in 2000.
For well over a decade now Yannick had been involved with the European Space Agency’s Euclid mission. He was a major force right from the beginning, making the proposal, and after it was accepted leading the Consortium assembled to bring the project into being, preparing for launch, and dealing with the first data. The Euclid Consortium is a huge collaboration and it is impossible to overestimate the scale of the task facing the Lead. The first full data release (DR1) from Euclid will take place towards the end of next year (2026). It is sad beyong words that he did not live to see this.
During the period when I was Chair of the Euclid Consortium Diversity Committee I had a number of interactions with Yannick, sometimes dealing with difficult and confidential matters. I found him to be a man of great wisdom and sensitivity. Despite having many other things to deal with, including a long-term illness, he was unfailingly supportive and his advice was always sound.
The following is an excerpt from the message sent out yesterday:
Yannick’s death leaves a huge void within the consortium and our community. Those of us who have been here the longest know how hard he worked to make the Euclid project a success. He became its embodiment, working tirelessly to ensure its success; we owe him an immense debt of gratitude, and we will surely have the opportunity to reflect in detail on all that we owe him.
Indeed. I hope the Euclid Consortium – and the international cosmological community generally – will, at some stage, organize an appropriate tribute to Yannick.
Rest in Peace, Yannick Mellier (1958-2025)
Ar dheis Dé go raibh a anam
#Cosmology #Euclid #EuclidConsortium #GravitationalLensing #YannickMellier
Was interested in trying to make a black hole effect in Blender, and this is what I ended up with (just gravitational lensing, not a real black hole). It's not perfect, but I'm really happy with how it came out.
I achieved it with a set of 10 concentric spheres. Each one is textured with a dot product between the incoming camera ray and the normal to give a Fresnel-like effect with black at the boundary and white in the center, and then I use an exponent to intensify the effect (and make the borders very indistinct), and feed that into a refraction node.
The concentric spheres allow repeated refractions to give the lensing effect, and the indistinct boundaries stack nicely.
#Blender #Blender3D #Art #3DArt #BlackHole #GravitationalLensing #GravitationalLense
Gravitational Lensing of 3I/ATLAS by the Sun - Avi Loeb – Medium
https://atlas.whatip.xyz/post.php?slug=gravitational-lensing-of-3iatlas-by-the-sun-avi-loeb-medium
"Unveiling the Cosmic Secrets: 3I/ATLAS' Gravitational Lensing Journey with Avi Loeb"
#space #astronomy #gravitationallensing #3iatlas #aviloeb