1088 papers
This paper proposes that the unique characteristics of supernovae like SN 2021yfj, which interact with dense silicon- and sulfur-rich circumstellar matter, can be explained by the merger of two white dwarfs where a hybrid white dwarf's outer layers are tidally stripped to form the surrounding shell.
This paper proposes a low-energy, low-thrust trajectory design for a mission touring Saturn's inner large moons (Rhea, Dione, Tethys, Enceladus, and Mimas) that utilizes J2-perturbed three-body dynamics and invariant manifolds to achieve full surface coverage while minimizing fuel consumption and maximizing observation time compared to traditional flyby missions.
This paper reports a novel correlated trend between the long-term flux variations of persistent radio sources and the burst energetics of specific fast radio bursts (FRB 20190520B and FRB 20240114A), providing evidence that both phenomena may be powered by a shared energy reservoir, such as a magnetar.
This review explores how space-based gravitational wave detectors like LISA can probe the nature of dark matter by analyzing its effects on compact-object dynamics, gravitational lensing, and direct field couplings.
This paper presents multi-epoch VLBI and spectral monitoring of the supermassive black hole binary candidate SDSS J143016.05+230344.4, revealing a delayed radio flare that traces kinetic energy injection from a compact synchrotron component interacting with a structured circumnuclear medium.
This paper demonstrates that a discrete polarimetric tomography method, when applied to synthetic multi-spacecraft white-light images, effectively reconstructs the 3D density structure and front location of coronal mass ejections with higher accuracy using polarimetric data and at least four observing spacecraft compared to non-polarimetric approaches.
By modeling eight Milky Way dwarf spheroidal galaxies with solitonic cores and NFW envelopes while accounting for core-halo diversity, this study identifies two distinct fuzzy dark matter particle mass ranges consistent with observed kinematics, though the resulting constraints challenge the theory by conflicting with satellite abundance counts and Lyman- forest limits.
This study utilizes general relativistic ray-tracing to demonstrate that intensity and polarization images of thick accretion disks around four-dimensional Gauss-Bonnet black holes are significantly influenced by the Gauss-Bonnet coupling parameter and disk inclination, offering distinct observational signatures that can probe the intrinsic spacetime structure and near-horizon accretion dynamics.
This paper reports the first isotopic ratio measurements for an interstellar comet, 3I/ATLAS, revealing elevated nitrogen and carbon ratios that suggest the object originated in the outer disc of an older, low-metallicity star.
This study utilizes data-driven magnetofrictional simulations to demonstrate that the November 28, 2023, eruption from solar active region 13500 was triggered by the progressive injection of magnetic helicity and energy, which formed a twisted flux rope that became torus-unstable when the ratio of current-carrying to total relative helicity reached a critical threshold of 0.30.
This study demonstrates that convolutional neural networks can accurately predict star cluster ages from broadband imaging by identifying physically meaningful, age-dependent environmental cues in the surrounding interstellar medium, particularly for young clusters where traditional color-based methods face limitations.
This paper proposes that the rapid "flip-flop" spectral transitions observed in X-ray binaries and the changing-state phenomena in active galactic nuclei are scale-invariant manifestations of the same underlying accretion physics, occurring at a few percent of the Eddington luminosity with transition timescales that scale linearly with mass.
This paper proposes a new, more efficient broadband SETI strategy that leverages existing non-SETI astronomical survey data to constrain the prevalence of nearby communicative civilizations and alien probes, arguing that the lack of detected signals or probes suggests no such civilization has been within 100 light-years of Earth in the past few billion years.
This paper presents a fully reproducible black hole-neutron star merger simulation targeting the GW230529 event, performed using the Einstein Toolkit at multiple resolutions and released as a new gallery example to establish a standard reference configuration for future research.
By analyzing the two recent catastrophic collision events in the Fomalhaut system, this study employs a statistical model to constrain the main belt's total mass to 200–360 Earth masses and predicts a high rate of future collisions, indicating that continued monitoring is essential for understanding the system's planetesimal population.
This paper investigates the Little Rip dark energy model as a potential solution to the and cosmological tensions using recent observational data, including DESI-DR2, and finds that while the model reduces the Hubble tension to below $3\sigma\Lambda$CDM model.
This paper estimates the detection rates of TeV-emitting Gamma-Ray Bursts similar to GRB 221009A for current and upcoming ground-based observatories (LHAASO, LACT, and SWGO) under two emission models, predicting annual detection frequencies ranging from 0.03 to 0.4 events depending on the instrument and model assumptions.
This paper presents a new likelihood-based method using James Webb Space Telescope photometry of brown dwarf cooling sequences to determine globular cluster ages with high precision, while analyzing key systematic uncertainties and providing observational guidelines for future studies.
This paper proposes a unified model for jet formation in diverse astrophysical systems, suggesting that turbulence-stored binding energy in thick accretion disks accelerates stable blobs through funnel structures to create opposing jets originating from the innermost disk region.
This paper presents a methodology for searching for unintended electromagnetic radiation from Starlink satellites using the 21 Centimeter Array, which, despite limited sensitivity preventing the detection of Starlink emissions, successfully validated its transit prediction framework by identifying ORBCOMM signals and attributed observed broadband bursts to local power line arcing rather than satellite interference.