966 papers
This paper introduces a multi-modal deep learning framework utilizing Vision Transformers and cross-attention mechanisms to accurately infer protostellar mass, inclination, and position angle from CO observations, effectively overcoming projection biases and demonstrating superior robustness compared to traditional convolutional networks.
Using the TripleSpec spectrograph at Palomar Observatory, researchers conducted a dedicated search for the predicted 1.05 m aromatic infrared band in absorption toward the highly-extinguished star BD+40 4223 but found no evidence for the feature, establishing a strict upper limit that challenges existing models of polycyclic aromatic hydrocarbon properties and charge distribution.
This paper presents multi-wavelength observations of the young eruptive star IRAS 21204+4913, which brightened by approximately 5 magnitudes since October 2025 due to a massive accretion outburst, exhibiting unique spectral features, high polarization from an expanding dusty shell, and a historical 1948 outburst.
Using high-resolution transmission spectroscopy from the Gemini-South telescope, this study successfully characterizes the atmosphere of the temperate super-Earth L 98-59 d, marking the first ground-based detection of a molecular species (hydrogen sulfide) in a super-Earth and suggesting a cloud-free atmosphere with volcanic outgassing.
This paper argues that a persistent, cycle-invariant discrepancy between radio brightness temperatures and hydrostatic scale-height modeling in the quiet solar corona provides evidence for non-Maxwellian, kappa-distributed electron velocity distributions with kappa values of approximately 2–3, rather than the turbulent scattering or standard thermal equilibrium models previously assumed.
The CHRONOS paper proposes a next-generation cryogenic ground-based gravitational-wave observatory utilizing quantum non-demolition speed-meter technology to bridge the sub-Hz frequency gap, thereby enabling unprecedented long-duration tracking of compact binaries and precise constraints on the stochastic gravitational-wave background to advance astrophysics and cosmology.
This paper evaluates the spectral method-based Dedalus3 software for exoplanet atmospheric dynamics by testing it on a jet instability scenario, simulating Jupiter's zonal jets, and comparing hot-Jupiter flows, ultimately concluding that while it is a useful tool, careful problem-specific testing and execution are essential.
JWST and HST observations of the Abell402-BCG reveal a kiloparsec-scale stellar cavity likely caused by dynamic interactions with an actively accreting ultramassive black hole, potentially part of the most massive binary black hole system discovered to date.
This paper presents the public release of OpenGadget3, a cosmological hydrodynamical N-body code featuring a robust implementation of self-interacting dark matter that supports various elastic scattering cross-sections and two-species models, validated through accuracy tests and performance scaling.
This study presents the first comprehensive kinematic analysis of Galactic star clusters, revealing that rotation is imprinted during early formation and subsequently eroded by dynamical evolution, with a higher prevalence of rotating systems in young clusters and a tendency for older clusters to align their internal rotation with their orbital motion.
This paper reports on XMM-Newton observations of the supergiant X-ray binary 4U 1909+07, revealing a continued long-term spin-up trend and a unique pulse dropout event accompanied by spectral softening, which is interpreted as evidence of the propeller effect caused by a low-density wind cavity.
This paper demonstrates that weak lensing analyses can maintain their cosmological constraining power using significantly sparser source galaxy samples ($5\,\text{arcmin}^{-2}$) by leveraging spectroscopic calibration to mitigate redshift uncertainties and intrinsic alignment systematics, thereby enabling direct calibration of dominant errors with instruments like DESI.
This paper presents a robust statistical framework using Gaia-DR3 proper motions and line-of-sight velocities to identify kinematically outlying Large Magellanic Cloud globular clusters, revealing that their inclusion can bias dark matter mass estimates by up to 30% and suggesting these clusters may have been accreted from external galaxies.
This paper provides a comprehensive analytical study of gravitational-wave signal localization by pulsar timing arrays, deriving expressions for sky localization precision that reveal how the interplay between pulsar-source angular proximity and distance measurement accuracy determines whether improvements stem from tighter distance constraints or the strategic addition of nearby pulsars.
Using general relativistic magnetohydrodynamic simulations with a passive tracer to isolate physical baryon density, this study reveals that baryon loading in magnetically arrested black hole jets is an episodic process driven by magnetic flux eruptions and shear-driven waves, leading to charge-starved, baryon-poor plasma in spinning systems with implications for particle acceleration and non-thermal emission.
This study utilizes two-dimensional radiation-hydrodynamic simulations to demonstrate that relativistic precession of tidal disruption event streams significantly delays light curve peaks by up to 100 days in systems involving massive black holes () viewed at high inclination, while having minimal impact on lower-mass or face-on configurations.
This paper demonstrates that SPHEREx spectrophotometric survey data can effectively confirm high-redshift quasars without ground-based follow-up, successfully discovering 87 new luminous quasars at and 203 lower-redshift objects with a 100% spectroscopic confirmation rate in a subset of candidates.
This "unreview" paper shifts focus from established knowledge to critical unresolved questions regarding accretion physics in white dwarfs—such as viscosity, wind launching, and precession—to motivate future research that will advance understanding across all mass scales.
This paper proposes that the time-evolving MeV emission lines detected in the prompt phase of the record-breaking GRB 221009A are Doppler-boosted signatures of radioactive decay from the associated supernova, providing direct spectroscopic evidence linking the burst's prompt emission to stellar nucleosynthesis.
This paper proposes that assuming a thermal initial state for gauge fields during inflation, rather than the standard vacuum, introduces a dissipative boost that enhances primordial magnetic fields by up to $10^{16}$, suggesting that embedding this mechanism in a warm inflation framework offers a promising path to inflationary magnetogenesis without requiring non-minimal couplings or modified electrodynamics.