331 papers
This study demonstrates that by incorporating environmental density as a free parameter in Bayesian analyses of RELHIC gas distributions, researchers can robustly and unbiasedly infer the virial masses of individual starless dark matter halos, effectively overcoming mass-concentration degeneracies to establish a reliable framework for weighing these objects in future surveys.
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.
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 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.
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.
This paper presents a highly sensitive, high-resolution point source catalogue of the Large Magellanic Cloud derived from MeerKAT 1.3 GHz observations, which detected 339,128 sources—significantly more than previous ASKAP surveys—due to its superior noise level and angular resolution.
This paper reports evidence for a spatial variation in the electron-to-proton mass ratio, showing a significant shift in methanol spectral lines toward the Galactic center's SgrB2(N) cloud compared to the distant Orion-KL cloud, a finding potentially linked to dark matter's modulation of the Higgs scalar field.
This paper introduces a novel statistical component separation method using Scattering Covariance statistics to effectively disentangle Galactic dust emission from Cosmic Infrared Background anisotropies in Planck 353 GHz data, overcoming the limitations of traditional template-fitting approaches in regions with complex gas phases.
This paper presents hand-curated size measurements and multi-wavelength characterizations of 2,002 multiple-component radio AGNs in the ROGUE I catalog, revealing how morphological classes, jet stability, and local intracluster medium conditions influence source sizes, arm-length asymmetries, and evolutionary tracks across redshifts 0.01 to 0.54.
This study demonstrates that combining mid-infrared variability metrics from WISE multi-epoch data effectively identifies active galactic nuclei, recovering about 28% of optically selected AGNs and revealing candidates in optically inactive hosts while showing minimal contamination from transient events.
Using high-resolution direct N-body simulations to track neutron stars from both surviving and disrupted globular clusters, this study demonstrates that the resulting population of millisecond pulsars can fully reproduce the observed Galactic Centre gamma-ray excess, thereby favoring an astrophysical origin over dark matter annihilation.
Using VLBI astrometry with VERA, this study measured the trigonometric parallax of the massive star-forming region IRAS 23385+6053 to determine a distance of approximately 2.17 kpc, revealing that molecular clouds in the Perseus arm at the Cepheus and Cassiopeia region extend over roughly 2 kpc.
By performing the first direct measurement of the ON reaction at astrophysical energies, researchers determined a thermonuclear rate approximately 1.5 times higher than standard values, thereby ruling out a previously suggested seven-fold enhancement and concluding that this reaction alone cannot explain observed calcium-to-sulphur and argon-to-sulphur ratio variations in Type Ia supernovae.
This study uses 3D simulations to demonstrate that while binary mergers of bosonic dark matter cores consistently produce stable solitonic remnants, the final mass retention is non-universal and critically depends on whether repulsive or attractive self-interactions are present, whereas the inclusion of an ideal gas component modifies the gravitational background without altering the intrinsic scaling of the bosonic core.
This study utilizes the high sensitivity of the MeerKAT radio telescope to search for synchrotron emission from Weakly Interacting Massive Particles (WIMPs) in the Reticulum II dwarf spheroidal galaxy, establishing improved constraints on WIMP properties and demonstrating the potential of radio astronomy for dark matter detection.
Using the VLA and HST, researchers discovered and spectrally resolved seven molecular clouds in the high-redshift radio galaxy B2 0902+34, marking the first detection of such structures at the onset of Cosmic Noon and opening new avenues for studying early Universe star formation physics.