Publications
Updates, research highlights, announcements, and public-facing stories from the ICRA community.
Research
A new preprint combines Cherenkov, air-shower, radio, and lunar neutrino searches into a set of 90% confidence upper limits on the diffuse cosmic neutrino flux from 10^16 to 10^26 eV.
Sep 29, 2026
Research
A new arXiv preprint argues that LSST's three-day cadence will miss the fastest early supernova signals, and lays out the shadowing surveys and data infrastructure needed to catch them.
Sep 29, 2026
Research
A search of eight years of pre-explosion ATLAS data and new radio observations of SN 2024ggi finds no precursor outbursts, pointing instead to a steadier, wind-like mass-loss history and an extended chromosphere around the dying star.
Sep 25, 2026
Research
A new historical study argues that the neutrino-dominated universe of the early 1980s gave particle dark matter its first success—and its lasting standards—even as neutrinos now fog the WIMP searches it inspired.
Sep 21, 2026
Meetings
A new workshop report maps how wide-field slitless spectroscopy from Hubble, JWST, Euclid, and Roman could turn overlapping spectral traces into a statistical view of galaxy evolution, transients, and rare objects—if shared tools and benchmarks catch up.
Sep 19, 2026
Research
High-resolution ALMA observations sharpen estimates for far-infrared-bright quasars, supporting the picture that they are extreme starbursts whose star formation and black hole feeding are only weakly coupled, and that they occupy a brief transitional phase of galaxy evolution.
Sep 15, 2026
Research
A new analytical model argues that gravitational disk instability can explain the clumpy galaxies JWST sees in the first billion years, and that the biggest clumps sink inward, shaping the observed mass distribution.
Sep 15, 2026
Research
A new theoretical study finds that in a pulsating galaxy disk, rotation changes whether small-scale instabilities grow steadily or oscillate, and faster spin widens the unstable range.
Sep 11, 2026
Research
A new white paper proposes pairing a distributed cislunar telescope layer with a 4-meter Nautilus deep-search unit to characterize nearby natural objects and fading planetary-defense targets, and to test the largely unexplored Kuiper Belt-to-Oort Cloud transition.
Sep 9, 2026
Research
A new preprint outlines PEGASUS, a high-resolution ultraviolet spectrograph concept for the Habitable Worlds Observatory or a dedicated two-meter mission called Theon, and the three science pillars it could enable.
Sep 8, 2026
Research
A controlled comparison of five neural-network architectures finds that a frequency-aware design reconstructs simulated and real black hole merger signals better than a larger U-Net, while leaving glitches as the main obstacle.
Sep 7, 2026
Research
JWST observations of a galaxy pair at redshift 3.33 suggest that an interaction with a companion only 1/28th the host's stellar mass may have triggered the formation of a compact star-forming clump.
Sep 4, 2026
Research
A cross-laboratory study of 32 Titan haze analogs finds that surface energy—key to cloud seeding and lake interactions—is altered more by air exposure and experimental setup than by methane concentration, with cold-plasma tholins possibly better surface-property analogs, though the UV tholins' intrinsic surface energies remain uncertain.
Sep 3, 2026
Research
A new mission white paper outlines how a proposed 3.5-meter segmented space telescope with a coronagraph could directly image mature giant planets if a 10^-9 post-processed contrast is achieved, and assess habitable zones around the nearest Sun-like stars, while Earth-Sun analogs remain a stretch goal rather than a guarantee.
Sep 2, 2026
Research
New VIRUS observations of interstellar comet 3I/ATLAS trace gas and metal atoms out to about 85,000 kilometers in the sunward coma, revealing an unusually slow outflow and strong iron and nickel emission.
Sep 1, 2026
Research
A new concept in NASA’s ASTRA Initiative proposes hundreds of mass-produced small satellites flying as a distributed radio interferometer to observe stellar, planetary, and cosmic signals that Earth’s ionosphere blocks.
Aug 26, 2026
Research
A new preprint models Earth and Mars as hybrids of pebble accretion and planetesimal collisions, using volatile element depletion to estimate that Earth drew at least about 75% of its mass from pebble-grown protoplanets while Mars drew nearly three-quarters from Vesta-like planetesimals.
Aug 25, 2026
Research
A new multi-wavelength study finds that J0109-5424 is a z=2.07 FeLoBAL quasar rather than a z~6 lensed quasar, while P170+20 remains an unresolved puzzle—leaning toward a quasar-star alignment, but with a rare lens not conclusively ruled out.
Aug 25, 2026
Research
By comparing JWST images from 2022 to 2025, astronomers found a rising and fading supernova candidate in a barred spiral galaxy at redshift 0.688, offering a rare multi-band look at a distant stellar explosion.
Aug 21, 2026
Research
Observations of SN 2021pfs show it closely resembles SN 2011fe, but early ultraviolet and red-light differences may trace a more metal-rich progenitor; the photometric mismatch, especially at short wavelengths, could shift distance estimates by up to 12%.
Aug 20, 2026
Research
The PANSY radar at Syowa Station has assembled its first meteor head-echo orbit catalogue, revealing a double-banded initial-detection-height distribution and a possible new southern shower.
Aug 18, 2026
Pulsar Wind Nebulae
Joint Einstein Probe and LHAASO observations of PSR J1740+1000 reveal a 13-parsec X-ray tail aligned with an elongated ultra-high-energy gamma-ray source, suggesting that electrons and positrons above 100 TeV escape the pulsar wind nebula along an ordered path rather than diffusing immediately.
Aug 8, 2026
Research
A reduced-order preprint models whether an onboard axial dipole can create a magnetic window through an ionized hypersonic sheath, finding a candidate cone whose size shrinks sharply with sheath thickness and collisional loss and is narrow near threshold.
Aug 8, 2026
Research
A full 1–18 micron JWST spectrum of VHS 1256 b points to patchy clouds made of forsterite and enstatite, offering a new picture of a young, extremely variable planetary-mass companion—and a caution about how much retrieval models can currently claim.
Aug 6, 2026
Research
A new calculation extends Eggleton's classic Roche-lobe formula to Yukawa and power-law gravity, finding that the largest deformations can appear on the lobes' flanks rather than at their meeting point.
Aug 5, 2026
Planetary Science
Near-infrared spectra of 80 S-complex near-Earth objects reveal a size-dependent composition shift: L chondrite-like bodies match meteorite falls around 31–49 meters, while H and LL parent bodies likely lie below about 18 meters.
Aug 5, 2026
Research
A preprint counts how many 2025 astrophysics arXiv papers mention e-MERLIN, JCMT, BiSON, ELT, SKA, and Rubin, finding e-MERLIN in 80 papers and 161 when the European Very Long Baseline Interferometer (EVN) network is included.
Aug 3, 2026
Research
A Zooniverse citizen-science project classified nearly 50,000 galaxies and produced 6,739 ram-pressure-stripping candidates, with environmental trends that match earlier smaller-sample results.
Jul 30, 2026
Research
A new design paper describes how the ELT's HARMONI spectrograph was simplified after rescope, preserving plans for exoplanet atmospheres, high-redshift galaxies, and adaptive-optics performance with wide sky coverage.
Jul 29, 2026
Research
A new review chapter argues that habitability depends on the star's long-term evolution of X-rays, ultraviolet light, particles, and winds—not just a planet's current orbital distance.
Jul 29, 2026
Research
A new preprint outlines how the SKA telescopes and ALMA could combine centimeter and millimeter observations to catch young-star flares, map molecules hidden by dust, and separate free-free emission from dust in star-forming regions.
Jul 28, 2026
Research
Simulations forecast that LiteBIRD will measure the Milky Way's polarized dust and synchrotron glow precisely enough to turn a cosmological nuisance into a probe of interstellar conditions—and to show why simple foreground models fail.
Jul 22, 2026
Research
Archival uGMRT observations of quasar J352–15 find no statistical 21-cm forest signal, but the null result disfavours cold, substantially neutral intergalactic gas at z≈5.6 and indicates substantial pre-heating above the adiabatic cooling floor.
Jul 16, 2026
Research
VAPOLA packages years of ALMA VLBI observations of active galaxies and Sgr A* into non-proprietary, science-ready polarization products, lowering a steep technical barrier to studying black hole environments.
Jul 9, 2026
Research
A new preprint analysis of C/2023 A3 (Tsuchinshan-ATLAS) finds that the Great Comet of 2024 was carbon-depleted both before and after perihelion, suggesting the Oort Cloud is chemically heterogeneous.
Jul 7, 2026
Research
A new preprint describes PUEO's fully digital trigger, which uses 48 radio beams and 5–9 W of trigger logic to pick neutrino-like signals from Antarctic noise—though flight thermal limits forced its interference filters off.
Jul 6, 2026
Research
A review of star-planet interactions maps how radiation, tides, and magnetic fields jointly shape exoplanet atmospheres, interiors, and orbits—and why the Solar System is a valuable but imperfect guide.
Jul 4, 2026
Research
A new review shows how magnetic activity in cool stars obscures exoplanet signals while also governing the space environments where planets evolve.
Jun 30, 2026
Research
A new study in the SHARP Science Book special issue argues that the proposed near-infrared spectrograph for the ELT could deliver an independent, calibration-free check on the Hubble constant, a key test for cosmology's biggest disagreement.
Jun 30, 2026
Research
A concept study for ESO's Extremely Large Telescope proposes SHARP, a two-unit near-infrared spectrograph that could sample 200-parsec star-forming clouds across cosmic time and hunt the helium signature of the first stars.
Jun 29, 2026
Research
JWST's first near- plus mid-infrared (NIR+MIR) look at a broad-lined Type Ic supernova finds the earliest molecular detection in a core-collapse explosion and an infrared continuum consistent with heated dust, but no clear r-process signature.
Jun 26, 2026
Research
A new review maps how the SKA's radio telescopes could constrain WIMPs, axion-like particles, and dark photons by looking for faint synchrotron glow, narrow spectral lines, and polarized light.
Jun 24, 2026
Research
A new calibration pipeline for NASA's Carruthers Geocorona Observatory removes starlight, moonlight, outer-planet light, interplanetary hydrogen, and oxygen emissions from images of Earth's faint exosphere, with synthetic-image tests showing a mean bias of about -3 percent and scatter within mission requirements.
Jun 23, 2026
Research
New dynamical simulations of the 25 June 2025 stellar occultation feature around Quaoar favor a small satellite over a dense, sharp-edged arc, while mapping where other unseen moons could survive. The paper cautions that the feature could also be a transient clump and that the arc interpretation is statistically more probable even though it is dynamically harder.
Jun 22, 2026
Research
A new preprint describes a simulation-based study showing that the Carruthers Geocorona Observatory's ultraviolet passband response for both primary Lyman-alpha channels can be recovered to better than 7 percent using simulated observations of stars.
Jun 21, 2026
Research
A new review finds that DESI BAO data, combined with CMB and type Ia supernova observations, hint at evolving dark energy that crosses the phantom divide—but the signal depends on data choices, calibration, and theoretical assumptions.
Jun 20, 2026
Research
A new review argues that the decade-long disagreement over the universe's expansion rate has hardened into a crisis, with early-universe estimates internally stable, late-universe probes pointing high, and simple one-sided fixes running out.
Jun 18, 2026
White paper
An arXiv white paper proposes a relocatable ocean-bottom antineutrino detector that, based on models, could reduce crustal background 50–100-fold relative to similarly sized continental detectors and enable direct measurements of mantle geoneutrinos, probing Earth’s radiogenic heat budget.
Jun 18, 2026
Research
First results from the JWST LEGGOS survey use gravitational lensing to resolve 10–200 pc clumps in eight galaxies at and beyond cosmic noon, revealing recently quenched regions, varied metal mixing, and a mix of ionization conditions.
Jun 18, 2026
Research
New multiepoch spectra identify OQ 208 as a rare Fe II changing-look active galactic nucleus, where iron and hydrogen broad lines faded together over roughly 14 years and hint at a broader link between iron strength and accretion power.
Jun 16, 2026
Research
New simulations predict that radioactive nuclei forged in magnetar giant flares could produce MeV gamma-ray lines—especially from strontium-92 and krypton-88—that may be detectable with current and future MeV telescopes.
Jun 16, 2026
Research
A new hydrodynamic model of the nearby Type IIP supernova 2023ixf uses shallow early hydrogen absorptions and a JWST cobalt measurement to narrow its explosion energy to about 2.8 × 10^51 erg and its ejected mass to 13.2 solar masses.
Jun 13, 2026
Research
A new simulation-based study suggests that the baryonic Tully-Fisher relation can encode cosmological parameters and warm dark matter particle mass, not just galaxy distances.
Jun 11, 2026
Research
A new NuSTAR analysis resolves SLX 1744-299 and SLX 1744-300 above 10 keV for the first time, showing one fading, one bursting, and tightening indirect limits on whether either is an ultracompact X-ray binary.
Jun 9, 2026
Research
In IllustrisTNG simulations, low surface brightness galaxies have star-formation histories broadly similar to brighter galaxies, but higher halo spin and stellar angular momentum push material outward and dim their centers.
Jun 8, 2026
Research
A new white paper argues that a boosted Hubble could map the shape of ionizing radiation escaping star-forming galaxies, filling a gap between measurements near the Lyman edge and the full ionizing spectrum that models aim to describe.
Jun 4, 2026
Research
A new science book outlines how the proposed JAXA mission GREX-PLUS would use a cooled infrared telescope to hunt galaxies beyond redshift 15 and locate water's snowline in planet-forming disks.
Jun 3, 2026
Research
A new analysis of 28 quadruple-image gravitational lenses—26 observed with JWST's MIRI and two with Keck/Hubble narrow-line measurements—finds no evidence for warm dark matter deviations on dwarf-galaxy scales, setting upper limits on the dark matter free-streaming length and strengthening key predictions of cold dark matter.
Jun 3, 2026
Research
A new white paper argues that extremely deep Hubble ultraviolet imaging across 20 fields could help measure how often ionizing photons escape galaxies at redshifts 2 to 4, providing a missing calibration for cosmic reionization.
Jun 2, 2026
Research
By comparing thousands of bursts from repeating fast radio bursts with earthquakes, solar flares, magnetar X-ray flares and pulsar glitches, a preprint reports that repeaters occupy a distinct region of stochasticity-chaos space.
Jun 1, 2026
Research
Simulated Ariel surveys show that a hierarchical Bayesian model can recover a link between host-star metallicity and planetary atmospheric metallicity—if the survey includes enough planets to beat intrinsic scatter.
Jun 1, 2026
Research
A new JWST study identifies 253 reliable young stellar object candidates in the Pillars of Creation, finding them clustered along feedback-sculpted edges and hinting that some may have been triggered by massive stars—while cautioning that age and spatial evidence alone cannot prove it.
May 28, 2026
Research
A new preprint packages four open astrophysical corpora spanning the local universe to z~6, reports a sign reversal in a boundary-point angular velocity derived from rotation curves, and makes the analysis reproducible in minutes.
May 28, 2026
Cosmology
A new preprint forecasts that long-lived reionization relics in the Lyman-alpha forest and 21 cm intensity mapping could let next-generation surveys push the lower limit on warm dark matter mass to 39 keV.
May 26, 2026
Research
A new white paper argues that Hubble's ultraviolet capabilities are the only operating route to moderate- and high-resolution UV spectroscopy of nearby exoplanet host stars before the Habitable Worlds Observatory, making them essential for detecting hydrodynamic escape and identifying HWO targets.
May 22, 2026
Research
New JWST observations of asteroid 2024 YR4 show it will miss the Moon in 2032, while demonstrating that small asteroids can fade beyond ground-based reach before their hazard is resolved.
May 19, 2026
Research
A new synthesis argues that Mars is a uniquely data-rich analog for sub-Earth exoplanets—and that confirming a true Mars twin beyond the Solar System will remain at or beyond the limits of current telescopes.
May 18, 2026
Research
A Bayesian comparison of four Gaia DR3-based rotation-curve datasets finds the Einasto profile is preferred over the standard NFW profile in most combinations, and cored profiles are favored over NFW, within the adopted models.
May 16, 2026
Research
A new preprint forecasts that calibrated gravitational waves could improve estimates of the Moon's density and elastic parameters by roughly an order of magnitude, turning its seismic response into a new kind of tomography.
May 13, 2026
News
In Antarctica’s long winter night, the sky can stay dark not just for hours, but for months. That makes the continent one of the few places on Earth where an optical telescope can watch the same part of the sky again and again, without sunrise cutting the story in half. The Antarctic TianMu Staring Observation Project, or ATSOP, is a planned array of small telescopes designed to watch a large region around the South Celestial Pole with minute-scale sampling. The project’s prototype telescope, AT-Proto, has now operated at China’s Zhongshan Station for more than two years, testing whether this kind of polar sky watch can work in the cold, wind, low power, and limited network conditions of Antarctica.
May 12, 2026
News
Whether galaxy cores, dwarf satellites, and rotation curves can reveal tiny self-interactions in ultra-light dark matter.
May 12, 2026
News
Astronomers have directly counted oxygen atoms in a galaxy 13.4 billion light-years away. The number is 4% of the Sun's. But the real story is how they got it.
May 12, 2026
Research
A new arXiv preprint review maps how Earth science foundation models are evolving from task-specific perception toward multimodal reasoning and agentic scientific discovery—and catalogs more than 200 datasets and benchmarks along the way.
May 9, 2026
Research
A survey of 34 protoplanetary disks with JWST's MIRI finds extended molecular hydrogen emission consistent with slow, wide-angle winds. If such winds dominate disk dispersal, they could clear a 2–3 Jupiter-mass disk in about 2–3 million years—the same few-million-year timescale inferred for typical disks.
May 7, 2026
Research
A new review synthesizes how electrons spiral, drift, trap, and scatter in tangled cosmic magnetic fields, with consequences for mapping solar-wind connectivity, heat transport, and particle acceleration from Earth's magnetosphere to galaxy clusters.
May 5, 2026
Research
A new 3D resistive magnetohydrodynamic simulation suggests that the Sun's elusive coronal nanojets may be narrow bullets of cool, dense plasma dragged by reconnected magnetic field lines, which could explain their single-sided, multi-wavelength appearance.
May 4, 2026
Research
JWST's 5-12 micrometer thermal emission spectrum of rocky exoplanet LHS 3844 b points to a dark, low-silica surface and sets tight limits on carbon dioxide and sulfur dioxide, with no evidence of accumulated volcanic gases.
Apr 30, 2026
Research
By comparing JWST mid-infrared spectra with direct oxygen measurements in a sample of 18 nebulae, astronomers have produced the first empirical calibration of Ne23, a diagnostic that estimates oxygen abundance without the electron-temperature uncertainties of optical methods.
Apr 29, 2026
Research
Long-term TESS and radial-velocity monitoring of TOI-201 reveal a hot super-Earth, a warm Jupiter, and an eccentric brown dwarf sharing one orbital plane—an arrangement that hints at a gentler formation history than violent scattering.
Apr 27, 2026
Research
Samples returned by Hayabusa, Hayabusa2, and OSIRIS-REx show that many near-Earth asteroids are rubble piles; that carbonaceous material common in space is rare among meteorites; and that Ryugu and Bennu carried water and organic molecules.
Apr 24, 2026
Research
A new review preprint argues that the Sun's lower atmosphere supplies only the seeds for magnetic switchbacks, while the field reversals themselves likely form later in the expanding solar wind.
Apr 17, 2026
Research
A new arXiv preprint reports that simulated magnetically arrested accretion flows show more complex, less correlated variability than SANE flows, and that the same fractal-dimension signature may help separate X-ray classes of GRS 1915+105.
Apr 17, 2026
Research
A new arXiv preprint reports that in seven nearby molecular clouds, the mass per unit length of filaments follows a Salpeter-like power law only when all spatial scales are combined, suggesting the stellar mass spectrum may be pre-encoded in the filaments before stars form.
Apr 15, 2026
Research
A proposed hybrid photonic lantern would simultaneously feed an exoplanet spectrograph and sense wavefront errors, a dual role the authors propose could help the Habitable Worlds Observatory stare at an Earth-like world for weeks.
Apr 15, 2026
Missions
A new arXiv preprint overview describes how Japan’s Hayabusa2 will attempt a high-speed, close flyby of near-Earth asteroid Torifune in July 2026, demonstrating capabilities relevant to fast reconnaissance for planetary defense.
Apr 10, 2026
Research
A new deep-learning framework uses overlapping galaxy images from the DESI Legacy Imaging Surveys and Hyper Suprime-Cam to separate intrinsic structure from instrument artifacts, enabling counterfactual views and instrument-independent searches.
Apr 10, 2026
Research
The 130-night Galactic Archaeology survey with the Subaru Prime Focus Spectrograph will target about 100,000 stars, testing whether dwarf galaxies have dark-matter cusps or cores and comparing the merger histories of the Milky Way and Andromeda.
Apr 10, 2026
Research
A new review synthesizes the life cycle of comets and exocomets, concluding that the active cometary phase is transient, but the hidden outer planets and other delivery agents that drive their inward journeys remain a major blind spot.
Apr 9, 2026
Astrophysics
Using 28 quadruply lensed quasars, astronomers place one of the strongest upper limits yet on the minimum mass cutoff of the halo mass function in a sharp-cutoff CDM model, comparable to or stronger than constraints from Milky Way satellites.
Apr 6, 2026
Research
A simulation of 17 compact massive galaxies suggests that the mass-weighted in-situ fraction of their globular clusters, not just their number, best records an early, quiet assembly history—and that cluster positions can flag later tidal stripping.
Apr 3, 2026
Preprint
A new preprint introduces funbin, a Python package that bins 2D data with arbitrary shapes—from Penrose tilings to national borders—and uses existing astro- and particle-physics datasets to argue that bin geometry can shape fundamental understanding.
Mar 31, 2026
Research
A soft X-ray transient detected by Einstein Probe may be the prototype of a long-sought 'dirty fireball': an energetic massive-star collapse whose jet appears to have been slowed by baryons and produced no detected gamma rays.
Mar 27, 2026
Research
A new preprint describes ASTER, an LLM-driven toolkit that fetched data, built spectra, and ran Bayesian retrievals for WASP-39b, while also exposing how strongly results depend on which observations and modeling choices are used.
Mar 27, 2026
Research
New XRISM measurements of the starburst galaxy M82 show that a 23-million-kelvin outflow carries enough power for hot gas pressure to drive its multiphase wind, so cosmic-ray pressure is not required.
Mar 25, 2026
Research
New ALMA observations show that at least 42% of massive, gas-rich starbursts in z>1 overdensities are rotation-dominated discs, including a 520 km/s spiral, challenging models that rely on mergers or violent disc instabilities to build early massive galaxies.
Mar 24, 2026
Research
A new LISA conventions document sets shared definitions for time, frequency, source frames, and data analysis so the mission’s distributed science pipelines can exchange information consistently.
Mar 23, 2026
Research
The LIGO-Virgo-KAGRA collaboration reports that 91 confident gravitational-wave events, including 42 from O4a, show no evidence of deviations from general relativity in four broad consistency checks.
Mar 19, 2026
Research
A new LIGO-Virgo-KAGRA preprint finds no evidence for deviations from general relativity across 91 gravitational-wave events, improving some bounds by up to 5.5 times and setting a new limit on the graviton’s mass.
Mar 19, 2026
Research
LHAASO has detected PeV gamma-ray emission from the pulsar wind nebula powered by PSR J1849-0001, a pulsar with fifty times less spindown power than the Crab, implying particle acceleration efficiencies that challenge standard models.
Mar 16, 2026
Research
Keck spectroscopy of the faint dwarf galaxy DF9 finds its stars moving too slowly to require a dark matter halo, matching a prediction of the bullet-dwarf scenario for a trail of galaxies.
Mar 16, 2026
Research
In a preprint, astronomers report robust water and carbon monoxide, tentative ammonia and methane, and a possible mass above the deuterium-burning limit for the young planetary-mass companion VHS 1256 b, using cross-correlation on JWST/MIRI data.
Mar 13, 2026
Research
A new preprint proposes that a puzzling time-evolving MeV emission line from GRB 221009A could be the Doppler-boosted decay of nickel-56 synthesized in the supernova and entrained in the relativistic jet.
Mar 10, 2026
Research
Simulations suggest that JWST observations of cooling brown dwarfs could provide independent ages for globular clusters, with formal age errors under 0.2 Gyr in favorable cases, though systematics still dominate.
Mar 8, 2026
Research
A new white paper proposes turning the Extremely Large Telescope's segmented mirror into 33 sub-pupils and using fast single-photon detectors to perform visible-light intensity interferometry, aiming for milliarcsecond imaging of stars and compact objects in the 2040s.
Mar 5, 2026
Research
The ACES survey has released wide-field ALMA mosaics of the Milky Way’s central molecular zone, showing that different molecules trace extended gas, dense clumps, possible shock-linked gas, and ionized structures—offering a sharper view of the region’s slow star formation.
Mar 4, 2026
Research
A new preprint aligns Chandra X-ray spectra with summaries of scientific papers, improving estimates of 20 physical variables and flagging a candidate pulsating ultraluminous X-ray source.
Mar 4, 2026
Research
Chemical analysis of 14 stars in the C-19 stream reveals a rapid, early burst of star formation with no evidence of later generations, offering a nearby analogue to primordial star formation in the early universe.
Mar 2, 2026
Research
A new review of X-ray observations finds that bright hard-state black hole X-ray binaries can host accretion disks extending close to the innermost stable circular orbit before the hard-to-soft state transition, while X-ray polarimetry complicates the picture of the corona.
Feb 28, 2026
Research
A new preprint simulates ultra-light axion dark matter and forecasts that Euclid-like surveys could limit a 10^-25 eV axion’s energy density to less than 4.6% of dark matter at 95% credibility by studying how voids grow larger and emptier.
Feb 26, 2026
Research
A new preprint reports 765 morphologically classified occulting galaxy pairs from DESI Legacy Survey images, offering dust researchers a larger target list while showing where volunteer classifications remain uncertain.
Feb 25, 2026
Research
A new study identifies 101 RR Lyrae stars with Hubble and 125 candidates with JWST in the dwarf galaxy WLM, yielding a Gaia-consistent distance and a first-of-its-kind NIRCam period–Wesenheit–metallicity calibration—while exposing how JWST's short observing baselines complicate light-curve fitting.
Feb 24, 2026
Research
A new preprint maps the gravity, slopes, orbital pathways, and temperatures of asteroid (269) Justitia, giving the Emirates Mission to the Asteroid Belt a pre-arrival guide to an ultra-red, slowly spinning world.
Feb 23, 2026
Research
A new grid-based solver for the relativistic Vlasov–Maxwell equations reproduces pulsar-like pair-discharge screening and reconnection spectra without the statistical noise of particle simulations.
Feb 19, 2026
Research
A 2020 fireball over Sweden became the first instrumentally documented iron meteorite fall with a derivable orbit. Simulations suggest the recovered 13.8 kg mass may have ricocheted off a boulder before coming to rest about 75 meters away.
Feb 17, 2026
Research
High-resolution cosmological simulations of Milky Way-mass galaxies show that spiral arms can follow different formation theories at different times and even in different regions of the same disk.
Feb 16, 2026
Research
Simulations of more than 20,000 Earth-like planets suggest that adding a fourth long-term climate feedback can produce chaotic climates and, if strongly positive, can shrink the classical habitable zone.
Feb 10, 2026
Research
Six independent reductions of the same JWST/NIRSpec observation of WASP-39b produce atmospheric molecular abundances that can differ by more than an order of magnitude, and temperatures that vary by roughly 300 K, according to a new preprint.
Feb 6, 2026
Research
In a proof-of-concept study, SPHEREx spectra of eight NEOWISE-discovered infrared transients suggest two new FU Ori outbursts and one previously missed Galactic nova, showing how all-sky infrared spectroscopy can help classify dust-obscured eruptions.
Feb 6, 2026
Research
Deep Subaru/HSC NB395 imaging maps NGC 5466's tidal stream, finds a gap that N-body models can also produce without dark-matter encounters, and reveals a radial mass-function trend expected from preferential stripping of low-mass stars.
Feb 4, 2026
Research
A new preprint suggests two early quasars could have grown from roughly million-solar-mass seeds in dense primordial gas, without sustained Eddington-limited accretion or any super-Eddington episodes.
Feb 4, 2026
Research
New VLT/FLAMES spectroscopy of the 17-day binary VFTS 812 finds no luminous main-sequence companion above 6 solar masses, making a black hole the most suitable—but unconfirmed—explanation.
Feb 3, 2026
Research
A new Perspective argues that the Milky Way's residence inside a vast local void could inflate nearby expansion measurements while leaving the deeper universe consistent with the cosmic microwave background.
Feb 3, 2026
Research
New quantum calculations and hot-core models suggest fluorine and chlorine can strip hydrogen from ethanol, opening a gas-phase route that may modestly boost acetaldehyde in Sgr B2(N) and leave an ethanol radical as a potential target for radio searches.
Feb 3, 2026
Research
A new coupled model evolves an abiotic Earth from 50 million years after the magma-ocean phase to 5 billion years and, at the 4.5-billion-year comparison point, reproduces 17 of 19 pre-industrial properties within 1σ and two ocean-chemistry values within 1.4σ and 2.0σ. It suggests life is not required for long-term habitability and offers a synthetic reflected-light baseline for future exoplanet biosignature searches.
Feb 2, 2026
Research
A transit-timing study of 20 hot Jupiters confirms WASP-12 b's orbital decay, finds a surprisingly fast decay for TrES-1 b that clashes with theory, and detects orbital growth for WASP-121 b.
Feb 1, 2026
Research
A new simulation-based study finds that Lyman-alpha emission from cosmic filaments at redshift 4 could distinguish cold dark matter from warm dark matter. Warm dark matter filaments are marginally detectable with MUSE on the VLT; the fainter cold dark matter signal would likely require a future 30-meter-class telescope.
Jan 30, 2026
Research
A new preprint shows a variational autoencoder can compress ten-parameter Skyrme equations of state into three variables while reconstructing the maximum mass and the radius of a 1.4-solar-mass neutron star to about 0.1–0.15%.
Jan 29, 2026
Research
A new study of 40 kinematically confirmed polar ring galaxies, combining FAST H I observations with archival data, finds their rotation measurements scatter less if most of the gas is assumed to orbit in the perpendicular ring rather than the main stellar body.
Jan 29, 2026
Research
Combined JWST and Chandra observations reveal hot intracluster gas in JADES-ID1 at redshift 5.68, implying a massive early proto-cluster whose inferred mass is statistically unlikely in the small survey volume and hints structure grew faster than the cosmic average in some regions.
Jan 27, 2026
Research
A new preprint reports that flow matching-based continuous normalizing flows can estimate Bayesian evidence from posterior samples even when the probability landscape has many separate peaks; in an earlier highly multimodal gravitational-wave application, the method had required a hand-picked Gaussian mixture base distribution.
Jan 26, 2026
Research
A new white paper argues that planned exoplanet surveys will deepen a characterization gap unless a new class of photonics-enabled modular telescopes can measure masses and atmospheres at population scale.
Jan 26, 2026
Research
A new forecast finds that combining SKA and Euclid could detect deviations from ΛCDM in a generalized modified-gravity model only at about 2σ, highlighting how difficult it will be to distinguish it from a cosmological constant.
Jan 23, 2026
Research
JADES Data Release 5 provides the full JADES NIRCam imaging in GOODS-S and GOODS-N, plus co-reductions of 19 other JWST programs—1,253 hours of short-wavelength exposure, up to 18 filters, and 240 square arcminutes in the eight core filters—as public mosaics for studying galaxies in the early universe.
Jan 22, 2026
Research
Einstein Probe detected a ~560-second soft X-ray phase from a 0.4-second gamma-ray burst, suggesting merger-driven bursts may often hide long prompt X-ray emission.
Jan 20, 2026
Astrophysics
A new arXiv preprint suggests JWST's variable object Capotauro could be a pair-instability supernova from a 250–260 solar-mass metal-free star at z≈15, though a local Y0 brown dwarf remains a spectral alternative and cannot explain the variability.
Jan 12, 2026
Research
New cosmological simulations suggest million-solar-mass black hole seeds can form naturally in crowded proto-cluster regions, then grow fast enough to help explain JWST's overmassive black holes and little red dots.
Jan 8, 2026
Research
A new review of X-ray binaries finds that accretion disc winds are common around stellar-mass black holes and neutron stars, but their X-ray and optical signatures split across accretion states, suggesting the same wind may be present but changes how it glows with accretion state.
Jan 8, 2026
Research
A new simulation-based inference framework recovers known neutron-star universal relations, finds a new one linking radius to mass and two oscillation modes, and provides a quantitative handle on systematic errors that traditional fits miss.
Jan 7, 2026
Research
A new JWST/NIRISS survey behind the Abell 2744 cluster measures the Hα luminosity function at z~1.3 and z~2.0, revealing a steep faint-end slope and cosmic star-formation rate densities consistent with the peak near z~2.
Dec 29, 2025
Research
A graph neural network trained on high-fidelity optical simulations reproduces power and intensity patterns for LIGO-like interferometer models hundreds of times faster than standard tools, offering a possible shortcut for future detector design.
Dec 18, 2025
Research
New cosmological simulations suggest that a 50-million-solar-mass primordial black hole could naturally yield Abell 2744–QSO1’s extreme black-hole-to-stellar mass ratio and metal-poor gas.
Dec 16, 2025
Research
In its first science campaign, the ALPS II experiment at DESY found no evidence of axions or similar light particles, setting an axion-like-particle limit more than twenty times tighter than previous light-shining-through-a-wall searches.
Dec 16, 2025
Computational cosmology
CUBE2, a new open-source N-body code, ran two 6144³-particle cosmological simulations on 512 nodes and reported 94% weak-scaling efficiency, with matter clustering matching CAMB predictions.
Dec 14, 2025
Research
Using 28 quadruply imaged quasars, astronomers set the strongest limits yet on warm dark matter and infer a higher projected mass density in small dark-matter clumps than some simulations predict.
Nov 10, 2025
Research
A new preprint forecast suggests China’s AliCPT telescope could detect a predicted cosmic birefringence signal from a dark-energy–photon interaction, but only with precise calibration and years of data.
Nov 6, 2025
Research
A new Fermi-LAT analysis finds no significant dark-matter signal in the Galactic Center Excess and sets tight upper limits on annihilating WIMPs below a few hundred GeV, depending on the assumed dark-matter profile, while fitting a mixed model of stellar bulge and dark matter.
Nov 5, 2025
Research
Using DESI DR2, multiple CMB experiments, and two supernova samples, a preprint finds that interacting dark energy models—especially one tied to dark energy density—can fit better than ΛCDM, though the preference weakens when the supernova dataset changes.
Oct 13, 2025
Research
A new preprint forecasts that lunar gravitational-wave observatories could give weeks-to-months warning of neutron-star mergers and, paired with LIGO, localize them to a few square arcseconds.
Oct 6, 2025
Research
A recently developed consistency test finds that the neutron star–black hole merger GW200105 has a measured eccentricity that evolves as general relativity predicts, strengthening the case for an eccentric orbit rather than a look-alike effect.
Sep 30, 2025
Astrophysics
A JWST/NIRSpec survey of 24 massive quiescent and post-starburst galaxies at cosmic noon finds that many shut down star formation within 500 million years of a large starburst, but the range of quenching times points to multiple mechanisms.
Sep 22, 2025
Research
Using FLARES simulations, astronomers found two analogues of the record-breaking quiescent galaxy RUBIES-UDS-QG-z7, suggesting its rapid shutdown may have been driven by AGN feedback while exposing a lingering mismatch in galaxy number counts.
Sep 19, 2025
Research
JWST spectra of 27 luminous quasars at redshifts 5–6 reveal that six show extreme, fast [O III] outflows, a much higher rate than in lower-redshift comparison samples and a possible clue to early galaxy quenching.
Sep 10, 2025
Research
A semi-analytical model of galaxy and supermassive black hole growth disfavors fuzzy dark matter below 2.0 × 10⁻²⁰ eV and warm dark matter below 7.2 keV at 95% confidence, using JWST and earlier observations.
Sep 8, 2025
Research
An analysis of 153 gravitational-wave mergers finds a sharp transition near 45 solar masses, supporting the pair-instability gap and linking black hole masses to a key nuclear reaction in massive stars.
Sep 4, 2025
Research
A cosmological simulation finds that only about one in ten simulated galaxies selected as post-starburst are truly quenched, and that the genuine ones may owe their shutdown to black hole feedback.
Aug 29, 2025
Research
Prototype diamond-loaded polyimide aerogel filters survived cooling to 4 K and showed infrared-blocking performance that could aid future cosmology, astrophysics, and lunar instruments.
Aug 28, 2025
Research
A new preprint describes two volunteer-proposed glitch classes in LIGO data—one tied to a photon-calibrator fault, the other to thunderstorms—showing how community science can spot new glitch types that machine-learning classification struggles with.
Aug 19, 2025
Research
A preprint study uses simulations to show how Cherenkov telescope facilities in India, modeled on MACE and TACTIC, could use intensity interferometry during moonlit downtime to estimate Polaris’s mean radius and radial pulsation parameters, with uncertainties ranging from sub-percent to tens-of-percent.
Aug 13, 2025
Astronomy
NASA's Exoplanet Exploration Program has updated its Science Gap List, naming 17 areas—from small-planet atmospheres to stellar noise and exozodiacal dust—that need work to advance exoplanet science and inform a future Habitable Worlds Observatory's goal of characterizing roughly 25 potentially habitable exoplanets.
Jul 24, 2025
Research
A new preprint reports that Rubin Observatory's commissioning images caught comet 3I/ATLAS ten days before its discovery, estimated an upper limit on its nucleus size and measured its dust coma, and found a short, puzzling sunward-pointing tail.
Jul 17, 2025
Research
New JWST-NIRSpec observations map how stars move inside the lens galaxy RXJ1131-1231, a step toward breaking a key degeneracy in time-delay measurements of the Hubble constant.
Jun 26, 2025
Research
New dark-matter simulations of Milky Way-like galaxies suggest that the fossil record of the first stars should be sought in the bulge and inner halo, where ancient material sinks and stays.
Jun 16, 2025
Research
Spectroscopy of gravitationally lensed LAP1-B reveals an ultra-faint galaxy with only about 0.4 percent of solar oxygen, an exceptionally hard ionizing field, and an elevated carbon-to-oxygen ratio that hint at an early, possibly Population III, stellar generation.
Jun 13, 2025
Research
JWST observations of WASP-94A b reveal a cooler, cloud-covered morning limb and a hotter, relatively clear evening limb. The results point to condensate clouds cycling around the planet—and show that ignoring this asymmetry can bias inferred chemical abundances.
May 16, 2025
Research
A new preprint reports numerical-relativity simulations of a hadron-to-quark transition in a binary neutron-star merger remnant. In the simulations, the transition adds distinctive extra peaks to post-merger gravitational-wave spectra and leaves a frequency hotspot or steady rise in the spectrogram; if GW170817 promptly collapsed to a black hole, the authors infer that a smoother transition is favored.
Mar 29, 2025
Research
JWST and gravitational lensing have produced the first stellar-dynamical mass for an inactive supermassive black hole at redshift 1.95, finding about 6 billion solar masses and evidence that black-hole–bulge scaling has evolved substantially while the black-hole–velocity-dispersion relation may have been in place for about 10 billion years.
Mar 21, 2025
Research
New JWST NIRSpec observations of a red quasar at z=0.4352 show that [Fe II] gas in two outflow lobes is mostly photoionized, while a southern clump bears signs of shock excitation likely driven by the quasar wind.
Oct 29, 2024
Research
Astronomers report that a massive, hydrogen-depleted star in the Andromeda galaxy faded away without a detected bright supernova, a signature expected when most of the star's material falls back into a newly formed black hole.
Oct 18, 2024
Research
A new arXiv preprint argues that Hubble's ultraviolet and blue-light images capture the rest-frame UV view of at least half of all stars, a view JWST cannot replace, making continued Hubble imaging essential for galaxy science.
Oct 2, 2024
Research
KHARMA, a new open-source GRMHD code, is designed to simulate black hole accretion efficiently on CPUs and GPUs, and its modular packages open the door to longer, more physics-rich Event Horizon Telescope comparisons.
Aug 2, 2024
Research
A new preprint argues that the cosmological gravitational-wave background produced by quantum fluctuations of spacetime during inflation does not follow the adiabatic initial conditions of the cosmic microwave background, enhancing its expected angular power spectrum by roughly an order of magnitude.
Jul 20, 2023
Research
A new N-body simulation reproduces the Sagittarius stream's core, arms, and bifurcations without needing a massive Large Magellanic Cloud, but its failure to match the arms' energy-angular-momentum relation may point to gas missing from current models.
Apr 18, 2022
Research
A 2021 simulation study predicts that nearly invisible stellar halos around dwarf galaxies could help disentangle warm dark matter from a high galaxy-formation threshold—and constrain the mass threshold for small galaxies to form stars.
Oct 11, 2021
