1088 papers
Using data from the FAST telescope, researchers discovered the double neutron star system PSR J0641+0448 and precisely measured its component masses as approximately 1.32 and 1.27 solar masses, a finding consistent with established correlations between neutron star masses and orbital eccentricities.
This paper presents a proof-of-concept workflow using the Hough Transform and SatChecker to detect, identify, and measure the brightness of satellite streaks in archival DECam images, demonstrating the feasibility of characterizing orbital debris impacts on astronomical surveys while highlighting challenges in detecting faint and transient glints.
Through global 3D GRMHD simulations of supermassive binary black holes with a Magnetically Arrested Disk, this study reveals that while shock-induced flares are often masked by intrinsic turbulence, distinctive electromagnetic signatures such as gravitational self-lensing flares in coplanar orbits and Lense-Thirring jet precession can be isolated via coordinated sub-millimeter and near-infrared monitoring.
Using Gaia DR3 astrometry, this study reveals that the kinematic properties of LMC Wolf-Rayet stars vary significantly by subtype, with very massive and lower-luminosity stars likely dominated by dynamical ejections, while binary WC stars and WNE stars suggest distinct formation mechanisms involving mass transfer and explosive mergers, respectively.
This paper presents spectroscopic redshifts for 31 galaxies in the Peanut cluster, revealing a massive system with a velocity dispersion suggesting a total mass of $2 \times 10^{15} M_\odot$ that may represent either a single extremely massive cluster or a rare, nearly head-on merger similar to the Bullet cluster, though the evidence for distinct substructures remains statistically ambiguous.
This paper utilizes a new spectral model (retBB) combined with IXPE, NICER, NuSTAR, and INTEGRAL data to demonstrate that the X-ray polarization of Cyg X-1 in the soft state is primarily produced by Comptonization in a semi-relativistic outflow, a finding that strongly favors a low black-hole spin and minimizes the role of returning disk radiation and general relativistic effects.
This paper presents a comprehensive catalogue and statistical analysis of greater than 100 MeV solar proton events from May 1996 to August 2024, derived from SOHO-ERNE observations and cross-calibrated with multi-instrument data to establish a unified framework for understanding high-energy particle acceleration across solar cycles 23–25.
This paper reports the discovery and statistical validation of TOI-4616 b, an Earth-sized planet orbiting a nearby mid-M dwarf, which serves as a valuable benchmark system for comparative studies and future atmospheric investigations of terrestrial planets.
The paper reports the discovery of Gaia-GIC-1, a young F-type star exhibiting high-amplitude optical dimming and sustained infrared brightening caused by a massive, hot dust cloud resulting from a catastrophic planetary collision, offering a unique opportunity to study terrestrial planet formation.
This paper proposes a new formula for the -viscosity coefficient in black hole accretion discs, derived from GRMHD simulations and expressed in terms of the "gyration radius," to accurately capture its universal behavior and improve analytic disc models.
This study utilizes LAMOST DR10 spectra cross-matched with Gaia and SDSS data to identify 63 isolated magnetic white dwarfs, including 32 new discoveries, demonstrating the survey's capability to characterize magnetic fields via Zeeman splitting and expand the known population for future follow-up.
This paper demonstrates that the previously reported gravitational anomaly in wide binaries, which supported Modified Newtonian Dynamics, is likely an artifact of orbital modeling choices, as a hierarchical Bayesian analysis accounting for three-dimensional orbital elements yields results consistent with standard Newtonian gravity.
This study utilizes photochemical simulations of Mars-like exoplanets to demonstrate that elevated water vapor levels significantly suppress the accumulation of abiotic oxygen and ozone, thereby reducing the maximum predicted false positive O2 abundance to approximately 2.7% and refining the criteria for distinguishing true biosignatures.
This paper introduces and validates two extensions of the Needlet Internal Linear Combination (NILC) framework—deprojecting foreground moments and marginalizing over residual power via data-driven templates—which effectively eliminate foreground-induced biases in the estimation of the tensor-to-scalar ratio using Simons Observatory Small Aperture Telescope simulations.
This paper presents the first simultaneous XMM-Newton X-ray and optical observations of the redback millisecond pulsar candidate 1FGL J0523.52529, revealing intermediate X-ray states with flare-dominated intrabinary shock modulation and ellipsoidal optical variations that enabled a refined orbital period, while confirming the continued absence of radio pulsations likely due to a surrounding shocked wind.
This paper updates the 2024 Big Bang Nucleosynthesis baryon abundance by using the code to marginalize over nuclear reaction rates, revealing that theoretical versus experimental Deuterium burning rates drive significant differences in derived abundances and yielding conservative estimates of with constraints on ultra-relativistic relics.
By re-analyzing the BU-FCRAO CO Galactic Ring Survey with a contour-based cloud definition, this study reveals that molecular clouds are high-density regions in hydrostatic equilibrium that evolve toward a time-dependent virial equilibrium driven by external turbulent pressure, while demonstrating that Larson's scaling relations are statistically insignificant and that column density is not constant.
This study utilizes high-resolution simulations to demonstrate that while environmental shielding in cool clouds protects dust grains during galactic outflows, grain size critically determines survival and transport efficiency, with large grains surviving across all phases and small grains being rapidly sputtered in hot gas, ultimately resulting in the hot phase dominating the delivery of surviving dust to the circumgalactic medium.
This paper demonstrates that field-level inference using the LEFTfield EFT-based forward model improves constraints on the baryon acoustic oscillation scale by a factor of 1.2–1.4 compared to standard reconstruction methods by explicitly sampling initial conditions alongside bias and noise parameters.
This study confirms that molecular clouds in the Andromeda galaxy (M31) exhibit density profiles consistent with hydrostatic equilibrium, demonstrating that their dynamical states and the interplay between turbulence and gravity are similar to those observed in the Milky Way.