News Radar Dashboard https://news.nebulacast.app/ Aggregated dashboard feed Fri, 13 Mar 2026 04:59:16 GMT Isophote shape analysis and the unfortunate subtlety of dwarf galaxy structure https://arxiv.org/abs/2603.11166 https://arxiv.org/abs/2603.11166 Fri, 13 Mar 2026 04:00:00 GMT SCIENCE arXiv:2603.11166v1 Announce Type: new Abstract: Dwarf galaxies ($M_{*}/M_{\odot} \lesssim 10^{9.5}$), being sensitive to key evolutionary drivers like baryonic feedback and tidal perturbation, are crucial for... more »]]> Searching for Life-As-We-Don't-Know-It: Mission-relevant Application of Assembly Theory for Exoplanet Life Detection https://arxiv.org/abs/2603.11086 https://arxiv.org/abs/2603.11086 Fri, 13 Mar 2026 04:00:00 GMT SCIENCE arXiv:2603.11086v1 Announce Type: new Abstract: This white paper introduces a framework for applying Assembly Theory (AT) to planetary atmospheres as a biosignature framework suitable for the Habitable Worlds... more »]]> Solar twins in Gaia DR3 GSP-Spec II. Age distribution and its implications for the Sun's migration https://arxiv.org/abs/2603.11155 https://arxiv.org/abs/2603.11155 Fri, 13 Mar 2026 04:00:00 GMT SCIENCE arXiv:2603.11155v1 Announce Type: new Abstract: Solar twins are among the most powerful tracers of Galactic disk evolution owing to their unique property of sharing nearly solar metallicities ([Fe/H] ~ 0) while spanning... more »]]> The TRGB-SBF Project. IV. A Color Calibration of the TRGB in the JWST F090W+F150W Filters https://arxiv.org/abs/2603.11160 https://arxiv.org/abs/2603.11160 Fri, 13 Mar 2026 04:00:00 GMT SCIENCE arXiv:2603.11160v1 Announce Type: new Abstract: Observations with JWST in the F090W band provide a powerful tool for determining galaxy distances based on tip of the red giant branch (TRGB) measurements. It is a great... more »]]> Large-scale environments of star-forming active galactic nuclei: How black hole mass, accretion rate, and luminosity connect to dark matter halos https://arxiv.org/abs/2603.11169 https://arxiv.org/abs/2603.11169 Fri, 13 Mar 2026 04:00:00 GMT SCIENCE arXiv:2603.11169v1 Announce Type: new Abstract: Understanding the relative roles of large-scale environment and internal host-galaxy processes in shaping AGN activity is essential for constraining models of black-hole... more »]]> Spontaneous Baryogenesis and Primordial Black Hole Dark Matter from Ultra-Slow-Roll Inflation https://arxiv.org/abs/2603.11177 https://arxiv.org/abs/2603.11177 Fri, 13 Mar 2026 04:00:00 GMT SCIENCE arXiv:2603.11177v1 Announce Type: new Abstract: We propose a unified framework where the totality of dark matter (DM), the baryon asymmetry of the universe, and a detectable stochastic gravitational wave (GW) background... more »]]> Neutrino Spectral Pinching in 3D Core-Collapse Supernovae: Late-Time Convergence, Failed-Explosion Signatures, and Viewing-Angle Dispersion https://arxiv.org/abs/2603.11272 https://arxiv.org/abs/2603.11272 Fri, 13 Mar 2026 04:00:00 GMT SCIENCE arXiv:2603.11272v1 Announce Type: new Abstract: We present a systematic survey of the neutrino spectral pinching parameter alpha_p(t, M, n-hat) across the Princeton Fornax ensemble of 3D core-collapse supernova... more »]]> A systematic study of AGN feedback in a disk galaxy I: global overview https://arxiv.org/abs/2603.11179 https://arxiv.org/abs/2603.11179 Fri, 13 Mar 2026 04:00:00 GMT SCIENCE arXiv:2603.11179v1 Announce Type: new Abstract: This is the first paper in a series using our MACER framework to investigate the evolution of a disk galaxy, which emphasizes the role of active galactic nucleus (AGN)... more »]]> A black hole and neutron star just collided in a strange oval orbit https://www.sciencedaily.com/releases/2026/03/260311213432.htm https://www.sciencedaily.com/releases/2026/03/260311213432.htm Fri, 13 Mar 2026 01:13:07 GMT NEWS Scientists analyzing a gravitational-wave signal have discovered that a neutron star and black hole spiraled together on an oval-shaped orbit just before merging. This unusual motion, detected in the event GW200105... more »]]> 'Completely bonkers': Astronomers find evidence of a cataclysmic collision between exoplanets https://www.space.com/astronomy/exoplanets/completely-bonkers-astronomers-find-evidence-of-a-cataclysmic-collision-between-planets https://www.space.com/astronomy/exoplanets/completely-bonkers-astronomers-find-evidence-of-a-cataclysmic-collision-between-planets Thu, 12 Mar 2026 21:00:00 GMT NEWS thumb

An illustration shows two planets colliding around the star Gaia20ehk. more »
]]> Webb spots details in nearby spiral galaxy NGC 5134 https://phys.org/news/2026-03-webb-nearby-spiral-galaxy-ngc.html https://phys.org/news/2026-03-webb-nearby-spiral-galaxy-ngc.html Thu, 12 Mar 2026 19:40:05 GMT NEWS thumb

Two powerful instruments of the NASA/ESA/CSA James Webb Space Telescope joined forces to create this scenic galaxy view. This spiral galaxy is named NGC 5134, and it is located 65 million light-years away in the... more »
]]> NASA's tiny spacecraft sends first exoplanet images https://phys.org/news/2026-03-nasa-tiny-spacecraft-exoplanet-images.html https://phys.org/news/2026-03-nasa-tiny-spacecraft-exoplanet-images.html Thu, 12 Mar 2026 18:02:08 GMT NEWS thumb

With the first images from the spacecraft now in hand, the team behind NASA's Star-Planet Activity Research CubeSat, or SPARCS, is ready to begin charting the energetic lives of the galaxy's most common stars to help... more »
]]> Tiny NASA Spacecraft Delivers Exoplanet Mission’s First Images https://www.nasa.gov/science-research/astrophysics/exoplanet-science/tiny-nasa-spacecraft-delivers-exoplanet-missions-first-images/ https://www.nasa.gov/science-research/astrophysics/exoplanet-science/tiny-nasa-spacecraft-delivers-exoplanet-missions-first-images/ Thu, 12 Mar 2026 16:41:27 GMT NEWS thumb

This pair of images shows stars observed Feb. 6, 2026, by the SPARCS space telescope simultaneously in the near-ultraviolet, left, and far-ultraviolet, right. The fact that one star is seen in the far-UV while multiple... more »
]]> Tiny NASA Spacecraft Delivers Exoplanet Mission’s First Images https://www.jpl.nasa.gov/news/tiny-nasa-spacecraft-delivers-exoplanet-missions-first-images https://www.jpl.nasa.gov/news/tiny-nasa-spacecraft-delivers-exoplanet-missions-first-images Thu, 12 Mar 2026 16:00:00 GMT NEWS The SPARCS cube satellite is ready to begin studying low-mass stars and to reveal details about the habitability of the planets they host. more »]]> Webb Spots Details in Nearby Spiral Galaxy https://www.nasa.gov/image-article/webb-spots-details-in-nearby-spiral-galaxy/ https://www.nasa.gov/image-article/webb-spots-details-in-nearby-spiral-galaxy/ Thu, 12 Mar 2026 15:56:51 GMT NEWS thumb

Two powerful instruments of the NASA/ESA/CSA James Webb Space Telescope joined forces to create this scenic galaxy view. This spiral galaxy is named NGC 5134, and it’s located 65 million light-years away in the... more »
]]> Help Galaxy Zoo: Tidal Tales Open Cosmic Storybook https://science.nasa.gov/get-involved/citizen-science/help-galaxy-zoo-tidal-tales-open-cosmic-storybook/ https://science.nasa.gov/get-involved/citizen-science/help-galaxy-zoo-tidal-tales-open-cosmic-storybook/ Thu, 12 Mar 2026 15:41:54 GMT NEWS thumb

1 min read Help Galaxy Zoo: Tidal Tales Open Cosmic Storybook Galaxies carry the imprints of past encounters. When they pass near one another or collide, gravity pulls their stars into long tails, thin streams, and... more »
]]> ESO ALMA OHD 2025 https://www.eso.org/public/chile/images/annlocal26002a-es-cl/ https://www.eso.org/public/chile/images/annlocal26002a-es-cl/ Thu, 12 Mar 2026 15:00:00 GMT IMAGES thumb

Escolares participan del ESO ALMA OHD 2025 en Vitacura more »
]]> Сможем ли мы наблюдать планеты земного типа у других звезд с поверхности Земли? http://www.nebulacast.com/2026/03/blog-post_12.html http://www.nebulacast.com/2026/03/blog-post_12.html Thu, 12 Mar 2026 12:29:00 GMT NEBULACAST thumb

Гибридный орбитальный звёздный экран (starshade) , работающий совместно с крупными наземными телескопами для наблюдения экзопланет земного типа . Credit: Ahmed Soliman. Ahmed Soliman, phys.org, 6 марта 2026 года Поиск... more »
]]> The Shocking Features in the Closest Rich Galaxy Cluster Norma https://iopscience.iop.org/article/10.3847/1538-4357/ae4226 https://iopscience.iop.org/article/10.3847/1538-4357/ae4226 Thu, 12 Mar 2026 00:00:00 GMT SCIENCE The merger shocks generated by the collision of galaxy clusters elevate the pressure within the intracluster medium, significantly influencing the evolution of embedded cluster galaxies. We detect a merger shock (Mach... more »]]> A Search for Supermassive Black Hole Binary Candidates in 46 yr Radio Light Curves of 83 Blazars https://iopscience.iop.org/article/10.3847/1538-4357/ae3141 https://iopscience.iop.org/article/10.3847/1538-4357/ae3141 Thu, 12 Mar 2026 00:00:00 GMT SCIENCE The combined University of Michigan Radio Astronomy Observatory and Owens Valley Radio Observatory blazar monitoring programs at 14.5/15 GHz provide uninterrupted light curves of ∼ 46–50 yr duration for 83 blazars... more »]]> Numerical Simulations of Cold Clumps in the Hot Accretion Flows around Black Holes* https://iopscience.iop.org/article/10.3847/1538-4357/ae4728 https://iopscience.iop.org/article/10.3847/1538-4357/ae4728 Thu, 12 Mar 2026 00:00:00 GMT SCIENCE Previous numerical simulations have shown that cold clumps can form within hot accretion flows, offering insights into the detailed processes of the state transition in black hole X-ray binaries. However, the evolution... more »]]> ФОТО ДНЯ. Самба жёлтого мотылька HD 61005 http://www.nebulacast.com/2026/03/hd-61005.html http://www.nebulacast.com/2026/03/hd-61005.html Wed, 11 Mar 2026 11:20:00 GMT NEBULACAST thumb

Image Credit: X-ray: NASA / CXC / Johns Hopkins Univ. / C.M. Lisse et al.; Infrared: NASA / ESA / STIS ; Optical: NSF / NoirLab / CTIO / DECaPS2 Processing: NASA / CXC / SAO / N. Wolk - Text: Cecilia Chirenti ( NASA... more »
]]> The Binary Fraction of Stars in the Dwarf Galaxy Ursa Minor via Dark Energy Spectroscopic Instrument https://iopscience.iop.org/article/10.3847/1538-4357/ae422d https://iopscience.iop.org/article/10.3847/1538-4357/ae422d Wed, 11 Mar 2026 00:00:00 GMT SCIENCE We utilize multiepoch line-of-sight velocity measurements from the Milky Way Survey of the Dark Energy Spectroscopic Instrument to estimate the binary fraction for member stars in the dwarf spheroidal galaxy Ursa Minor... more »]]> Physical and Chemical Characterization of GY 91’s Multi-ringed Protostellar Disk with ALMA https://iopscience.iop.org/article/10.3847/1538-4357/ae3e8c https://iopscience.iop.org/article/10.3847/1538-4357/ae3e8c Wed, 11 Mar 2026 00:00:00 GMT SCIENCE GY 91, commonly categorized as a Class I young stellar object, is notable for disk dust substructures that have been hypothesized to trace early planet formation. Using the Atacama Large Millimeter/submillimeter Array... more »]]> Gaia-GIC-1: An Evolving Catastrophic Planetesimal Collision Candidate https://iopscience.iop.org/article/10.3847/2041-8213/ae3ddc https://iopscience.iop.org/article/10.3847/2041-8213/ae3ddc Wed, 11 Mar 2026 00:00:00 GMT SCIENCE We report the discovery of the optical dipper and low-luminosity infrared stellar transient Gaia20ehk (hereafter, Gaia-GIC-1), which is currently undergoing high-amplitude variability due to transiting dusty material... more »]]> Orbital Eccentricity in a Neutron Star–Black Hole Merger https://iopscience.iop.org/article/10.3847/2041-8213/ae474c https://iopscience.iop.org/article/10.3847/2041-8213/ae474c Wed, 11 Mar 2026 00:00:00 GMT SCIENCE The observation of gravitational waves (GWs) from merging black holes and neutron stars provides a unique opportunity to discern information about their astrophysical environment. Two signatures that are considered... more »]]> Hidden Molecular Bullets in Compact Young Planetary Nebulae https://iopscience.iop.org/article/10.3847/1538-3881/ae40ac https://iopscience.iop.org/article/10.3847/1538-3881/ae40ac Wed, 11 Mar 2026 00:00:00 GMT SCIENCE For the three planetary nebulae M 1-11, Vy 2-2, and Hen 2-459, we report the detection of kinematically distinct structures that exhibit different states and mechanisms of excitation in molecular hydrogen (H2). The... more »]]> The Host Galaxies of Active Galactic Nuclei with Direct Black Hole Mass Measurements* https://iopscience.iop.org/article/10.3847/1538-4357/ae41ad https://iopscience.iop.org/article/10.3847/1538-4357/ae41ad Wed, 11 Mar 2026 00:00:00 GMT SCIENCE Reverberation mapping (RM) determines the mass of black holes (BHs) in active galactic nuclei (AGNs) by resolving the BH gravitational sphere of influence in the time domain. Recent RM campaigns have yielded direct BH... more »]]> Number of papers published based on data obtained at ESO observatories (1996–2025) https://www.eso.org/public/images/ann26002a/ https://www.eso.org/public/images/ann26002a/ Tue, 10 Mar 2026 13:00:00 GMT IMAGES thumb

The number of refereed papers published based on data from ESO observatories, including those in which ESO is a partner, and archival data from 1996 to 2025. These numbers are from the ESO Telescope Bibliography... more »
]]> JWST заглянул в «роддом» массивных звёзд: новые детали области W51A http://www.nebulacast.com/2026/03/jwst-w51a.html http://www.nebulacast.com/2026/03/jwst-w51a.html Tue, 10 Mar 2026 10:28:00 GMT NEBULACAST thumb

Credit: Taehwa Yoo et al Астрономический Журнал, 6 марта 2026 года Космический телескоп James Webb впервые получил детальные инфракрасные изображения одной из самых активных областей звездообразования в нашей Галактике... more »
]]> First Statistical Detection of Mg ii-traced Cool Gas Outflows with JWST toward Cosmic Dawn https://iopscience.iop.org/article/10.3847/2041-8213/ae48ee https://iopscience.iop.org/article/10.3847/2041-8213/ae48ee Tue, 10 Mar 2026 00:00:00 GMT SCIENCE Galactic-scale outflows are a crucial component of galaxy evolution, yet their properties in the early Universe remain poorly constrained. We present the first statistical investigation of Mg ii-traced cool gas outflows... more »]]> Fine-grained Morphological Study of Galaxy Pairs: A Human-in-the-loop Self-supervised Classification Framework https://iopscience.iop.org/article/10.3847/1538-3881/ae4577 https://iopscience.iop.org/article/10.3847/1538-3881/ae4577 Tue, 10 Mar 2026 00:00:00 GMT SCIENCE Galaxy pairs, as key probes for studying galaxy formation and evolution, provide a unique window for observing galaxy interactions, including the associated exchange of material and related galaxy formation activities... more »]]> Dwarf Galaxy Has "Too Many" Satellites https://skyandtelescope.org/astronomy-news/dwarf-galaxy-has-too-many-satellites/ https://skyandtelescope.org/astronomy-news/dwarf-galaxy-has-too-many-satellites/ Mon, 09 Mar 2026 14:30:24 GMT NEWS While small galaxies are expected to have even smaller satellite galaxies, astronomers have found a surprising number of tiny companions around one dwarf galaxy. The post Dwarf Galaxy Has "Too Many" Satellites appeared... more »]]> New look at the stars around the Milky Way's centre https://www.eso.org/public/images/potw2610a/ https://www.eso.org/public/images/potw2610a/ Mon, 09 Mar 2026 08:00:00 GMT IMAGES thumb

A new view on the heart of our Milky Way is presented in today's Picture of the Week. This stunning snapshot, taken with ESO’s Very Large Telescope ( VLT ), reveals the stars and gas surrounding an invisible giant — a... more »
]]> Вселенная гудит рябью в пространстве-времени: учёные только что удвоили наш каталог столкновений чёрных дыр и нейтронных звёзд. http://www.nebulacast.com/2026/03/blog-post.html http://www.nebulacast.com/2026/03/blog-post.html Mon, 09 Mar 2026 07:33:00 GMT NEBULACAST thumb

Ученые открыли еще более 100 событий гравитационных волн. Credit: Robert Lea при помощи Canva Robert Lea, space.com, 7 марта 2026 года «Мы действительно выходим на самые границы возможностей и видим объекты, которые... more »
]]> NGC 6447 - галактика с включающимся ядром http://www.nebulacast.com/2026/03/ngc-6447.html http://www.nebulacast.com/2026/03/ngc-6447.html Thu, 05 Mar 2026 08:37:00 GMT NEBULACAST Астрономы зафиксировали редкий процесс — постепенное «включение» активного галактического ядра (AGN) в галактике NGC 6447, которая ранее считалась спокойной. За 14 лет наблюдений в среднем инфракрасном диапазоне... more »]]> [JWST] Webb обнаружил звезду, взорвавшуюся как сверхновая, в галактике NGC 1637 http://www.nebulacast.com/2026/03/jwst-webb-ngc-1637.html http://www.nebulacast.com/2026/03/jwst-webb-ngc-1637.html Wed, 04 Mar 2026 08:12:00 GMT NEBULACAST thumb

esawebb.org, 23 февраля 2026 года Webb показал, что звезда была окружена обширной оболочкой пыли, богатой углеродом Впервые астрономы использовали изображения космического телескопа NASA/ESA/CSA James Webb , чтобы... more »
]]> [APOD][ФОТО ДНЯ] Комета Вежхоша http://www.nebulacast.com/2026/02/apod_01366730864.html http://www.nebulacast.com/2026/02/apod_01366730864.html Mon, 23 Feb 2026 06:35:00 GMT NEBULACAST thumb

Image Credit & Copyright: José J. Chambó ; APOD, 17 февраля 2026 года Некоторые кометы регулярно возвращаются в окрестности нашей Солнечной системы; другие пролетают лишь однажды и больше никогда не появляются. У нас... more »
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