1088 papers
The paper introduces the Long-Integration Magnetar Burst Observatory (LIMBO), a real-time radio transient detection system at Leuschner Radio Observatory, and reports its successful monitoring of the magnetar SGR 1935+2154, which yielded 12 candidate FRB detections and established a cumulative rate-fluence power-law slope of for Galactic magnetar bursts.
Using deep photometry and Gaia proper motions, this study finds that the globular cluster NGC 5824 possesses a symmetric, extended stellar envelope with a surface density profile consistent with the theoretical prediction for a cluster embedded within a dark matter halo.
The rapid optical detection of GRB 250702F by the Ondřejov D50 telescope revealed a unique flare morphology that provides compelling evidence for thermal electrons in ultra-relativistic shocks, challenging standard non-thermal afterglow models and aligning with particle-in-cell simulation predictions.
By analyzing Gaia DR3 data across 12 nearby molecular clouds, this study identifies a unique "skin effect" signature in the 862.1 nm diffuse interstellar band within the Taurus cloud that supports the carrier being a cationic species, such as a polycyclic aromatic hydrocarbon or fullerene, with an estimated ionization potential of approximately 12.40 eV.
This study utilizes surface flux transport modeling and randomized simulations to demonstrate that the non-random longitudinal distribution of active regions, particularly recurrent flux emergence in the southern hemisphere, significantly reinforced the large-scale equatorial magnetic field during the declining phase of solar cycle 24, while also showing that incorporating both axial and equatorial dipole components provides better constraints for model optimization than using the axial dipole alone.
This paper presents ULTRACAM photometric observations and public survey data to identify optical counterparts for nine quiescent black hole X-ray transients, resulting in the first optical identifications and precise astrometry for four targets, refined coordinates for an active source, and magnitude limits for five others to constrain their companion star properties.
The paper introduces SuperSNEC, an accelerated version of the SuperNova Explosion Code that utilizes adaptive gridding and solver optimizations to generate accurate supernova light curves for large model grids in under two seconds per model, achieving high fidelity with low-resolution simulations and successfully reproducing observed events like SN 2020oi without requiring additional power sources.
This paper presents and validates an iterative, regularized method for reconstructing the height-temperature profile of the solar atmosphere above active regions by analyzing multi-frequency gyroresonance radio observations from the RATAN-600 telescope, demonstrating its effectiveness in reproducing observed spectra with high accuracy.
This paper presents a photodynamical analysis of the TOI-4504 system using new TESS data to reveal that its two giant planets have precessed into a deeply resonant, fully relaxed state with measurable eccentricities, demonstrating a striking dynamical similarity to the GJ 876 system despite their different host star masses.
This paper demonstrates that individual supermassive black hole binaries produce distinct spatial correlation patterns in Pulsar Timing Array data, providing a robust geometric fingerprint that breaks degeneracies with stochastic backgrounds, significantly improves sky localization, and offers a reliable alternative to phase-coherent searches for identifying nanohertz gravitational-wave sources.
This paper introduces a novel search framework for precessing binary black hole systems in LIGO-Virgo-KAGRA data that utilizes mode-by-mode filtering, machine learning-based template reduction, and marginalization over harmonic signal-to-noise ratios to overcome the computational and statistical challenges of spin precession, ultimately increasing the sensitive search volume by approximately 10%.
This paper introduces "Black Hole Vision," an open-source iOS application that utilizes Schwarzschild and Kerr black hole lensing equations to synthesize real-time, gravitationally lensed views of a user's surroundings, thereby visualizing the horizon-scale features expected from the proposed Black Hole Explorer (BHEX) mission.
This paper presents a case study of the Astronomical Society of Australia's 2025 Annual Scientific Meeting, detailing the low-cost, hybrid organizational strategies, technical setups, and operational procedures employed to successfully integrate online and in-person attendance while sharing key lessons for future conference organizers.
This paper analyzes multiwavelength data of the blazar Ton 599 from 1983 to 2025, revealing highly correlated quasi-periodic variability with characteristic periods of 1.4 to 7.5 years that are best explained by a combination of geometric effects from a binary supermassive black hole system and stochastic internal jet shocks.
Using new VLBA trigonometric parallaxes and 3D kinematic distances of distant young stars, the BeSSeL Survey study revises the location of the Perseus spiral arm in the first Galactic quadrant to be 0.5–1.0 kpc farther from the Galactic Center than previously thought, thereby shifting its intersection point with the Sagittarius arm to a Galactocentric radius of approximately 5.6 kpc.
Using JWST NIRSpec/IFU observations, this study refutes one candidate Lyman-continuum leaker at due to a low-redshift interloper while confirming another as a genuine, merger-driven leaker with a near-unity escape fraction, thereby highlighting the critical role of high-resolution spectroscopy in identifying sources that may have contributed to cosmic reionization.
This study utilizes CTAO simulations with Gammapy to evaluate the observatory's ability to detect hadronic gamma-ray signatures from four PeVatron candidates, concluding that while 100 hours of observation are needed to distinguish proton cut-off energies up to 600 TeV, CTAO can likely exclude Cassiopeia A, RX J1713.7-3946, and HESS J1731-347 as PeVatron sources, leaving HAWC J2227+610 inconclusive.
Using controlled simulations of isolated galaxies, this study identifies halo concentration as the dominant predictor of galaxy size at the massive-dwarf mass scale, while also quantifying the systematic influences of halo spin, inner density profile, and baryon fraction on stellar and cold baryon radii.
This study utilizes DESI DR1 data to identify 656 confirmed and 767 candidate extremely metal-poor galaxies, demonstrating that their elevated star-forming main sequence and distinct metallicity relations closely mirror those of high-redshift galaxies, thereby validating their utility as local analogs for studying early universe galaxy evolution.
This paper introduces SwinYNet, a transformer-based multi-task model that achieves highly accurate and efficient Fast Radio Burst detection, segmentation, and parameter estimation directly from time-frequency data without de-dispersion, demonstrating superior performance over existing tools and enabling real-time, large-scale radio surveys on consumer-grade hardware.