Four of seven A stars show magnetic signatures in new study
A seven-star comparison found a sharp contrast between two ways of selecting slowly rotating, chemically peculiar A-type stars for magnetic-field searches.
Scientific publication3 min read
Subject
Astronomy & Space
Stars, planets, galaxies, cosmology, missions, and space observations.
11 published articles7 specialties
Latest in Astronomy
Preprint: AI Flags 14,426 Likely Young Stars in APOGEE Data
The model recovered 70% of labeled likely young stars and added 14,426 candidates, but recall ranged from almost 100% in M dwarfs to about 0% in O-type stars.
Scientific publication4 min read
Radio observations hint at hidden micro-flares on AU Mic
A short VLA observing run on the single star AU Mic found strong variability even during selected quiet intervals, along with two clear flares. The authors interpret the pattern as evidence that many small, unresolved flares may help sustain the star’s radio emission, but the result is based on one star at one epoch.
Scientific publication4 min read
Climate models classify 18 tidally locked exoplanets as potentially habitable
Under a shared idealized climate setup, 18 of 22 selected Earth-like planets met the study's temperature-based habitability criteria. Stellar heating shaped the broad climate split more than rotation, while pressure mattered most for the hottest modeled worlds.
Astrobiology4 min read
Crab Nebula model predicts a much wider PeV gamma-ray glow
A numerical model matches the Crab Nebula's spectrum and apparent extension while predicting a roughly sixfold larger 1.1-PeV gamma-ray radius when hadronic emission is included.
Phys. Rev. D 114, 043066 (2026)3 min read
Models estimate hundreds of supermassive black-hole pair candidates
A semianalytic simulation estimates how spectral deficits and periodic light curves could identify active supermassive binary black holes, with pulsar-timing forecasts offering a second test.
Monthly Notices of the Royal Astronomical Society, Volume 551, Issue 1, September 20265 min read
Computer models find rare black hole mergers in stellar triples
A computational study followed wide stellar triples from stellar birth to black-hole-binary merger, finding rare stable and unstable routes and distinct orbital and spin signatures.
Scientific publication4 min read
Preprint catalogs 350 possible ultraluminous X-ray sources
A catalog from eROSITA's first survey lists 350 possible ultraluminous X-ray sources in HECATE galaxies, but uneven coverage, modeled contamination from active galactic nuclei and unresolved blends limit what it can show.
Astronomy and Astrophysics, 712, A112 (2026)5 min read
Machine Learning Helps Find Rare Hot Subdwarfs and White Dwarfs
A narrative review of selected studies finds machine-learning methods are helping search survey data for hot subdwarfs and white dwarfs, while reported classifications and population estimates still require physical confirmation.
Scientific publication4 min read
Review Maps Potential Medical Uses for Microwave Kinetic Inductance Detectors
A technical review outlines four potential medical-imaging applications for microwave kinetic inductance detectors, while emphasizing that none has been clinically validated.
IEEE Transactions on Applied Superconductivity (2026)6 min read
Preprint: Interstellar comet 3I/ATLAS brightened while its colors stayed nearly unchanged
A study of interstellar comet 3I/ATLAS during its inbound, pre-perihelion passage found steady red optical colors, consistent brightening, a persistent sunward jet and an antisolar tail. Spectra clearly detected CN, while evidence for C2 and C3 remained at upper-limit level. Dust-composition and water-ice conclusions remain model-dependent.
T. Santana-Ros et al 2026, ApJ, 1007, 1824 min read