318 papers
This paper investigates how dark matter-driven dynamical friction affects eccentric binary pulsars embedded in ultralight scalar fields, demonstrating that orbital eccentricity significantly amplifies these environmental imprints and enhances the systems' potential as sensitive probes for dark matter signatures.
This paper proposes that "little red dots" are supermassive stars surrounded by massive self-gravitating accretion discs formed during galaxy mergers, a model that successfully reproduces their observed spectral features and suggests they are progenitors to massive black holes consistent with current luminosity and abundance constraints.
This paper analyzes the spectrophotometric evolution of SN 2024hpj and a broader sample of SN 2009ip-like events to characterize their star-forming origins, propose four sub-classes based on light curve diversity linked to circumstellar medium variations, and estimate progenitor masses between 25 and 31 solar masses.
This paper presents a new physically motivated, multi-zone leptohadronic model demonstrating that sub-Eddington blazar jets can efficiently accelerate protons to EeV energies to produce the ultra-high-energy neutrino fluxes observed by IceCube and KM3NeT, such as those from TXS 0506+056 and PKS 0605-085, while remaining consistent with multi-wavelength emission data and energy budget constraints.
This study simulates the detection of massive black hole binaries in the LSST survey by generating realistic optical light curves from hydrodynamic accretion models, revealing that LSST can identify approximately 0.01–0.1 such systems per square degree, with periodogram analysis showing a higher success rate for detecting binaries with high eccentricities and unequal mass ratios.
This study reveals that a brief radio re-brightening in the black hole X-ray binary MAXI J1348630 coincided with increased X-ray variability and the launch of two relativistic ejecta, suggesting a complex dynamic coupling where short-lived compact jets are reactivated and quenched during a hard-intermediate state transition preceding discrete ejections.
This paper presents a new selection method using eROSITA X-ray data and optical catalogs to identify period-bounce cataclysmic variables, successfully confirming six new systems (including one previously unknown) with TESS and SDSS follow-up, thereby increasing the known population of these rare objects by 18% to 39.
This paper presents an analytical model demonstrating that the time evolution of polarization signals in Type II supernovae with confined circumstellar material can be used to constrain the disk's geometric and physical parameters, successfully applying this framework to explain the observations of SN 2023ixf and thereby offering insights into the mass-loss mechanisms of massive stars.
This paper reports the discovery of a supermassive black hole in the Coma cluster, J1257, which exhibits a rare 20-year history of repeating, short-timescale X-ray variability and distinct spectral states, suggesting it is a low-mass active galactic nucleus potentially displaying quasi-periodic oscillations or eruptions.
Through -body simulations, this study critically assesses claims that dark matter spikes explain anomalous period decays in three low-mass X-ray binaries, ruling out previously proposed shallow profiles and establishing that significantly steeper density slopes () are required to account for the observed orbital evolution.
This study demonstrates that optically thick winds in very massive stars significantly enhance mass loss, thereby suppressing the formation of intermediate-mass black holes via direct collapse at metallicities above , a threshold one order of magnitude lower than previously predicted.
By combining new and existing XRISM/Resolve observations to map the Perseus galaxy cluster out to ~0.7, this study reveals high velocity dispersions and a dipole-like bulk flow indicative of merger-driven turbulence and rotation, constraining the viewing angle and suggesting that turbulent cascade plays a significant role in converting merger energy within the intracluster medium.
This paper applies a statistical formalism to LIGO/Virgo/KAGRA gravitational wave and AGN flare data, finding that while less than 3% of binary black hole mergers likely produce observable electromagnetic counterparts, up to 40% could still originate in AGN disks, though individual coincidences are more likely due to background flares than true associations.
This paper demonstrates that the broad iron line feature observed in AGN X-ray spectra can be explained by a relativistic reflection model where a warm, dissipative corona above an accretion disk, illuminated by an external X-ray source, generates highly ionized iron lines that are significantly broadened and redshifted by strong gravity.
This paper presents a comprehensive photometric and spectroscopic analysis of the fast, linearly declining Type Ibn supernova SN 2024acyl, revealing that its properties are best explained by ejecta interacting with a helium-rich circumstellar medium originating from a low-mass helium star in an interacting binary system.
This study demonstrates that the mass of a central supermassive black hole and a planet's distance from the galactic center critically determine exoplanet habitability by driving atmospheric heating, mass loss, and severe ozone depletion, particularly through energy-driven winds from active galactic nuclei.
This paper presents a new single-pulse search pipeline and associated software toolkits (FRBfaker and RFIbye) for the northern High Time Resolution Universe survey, demonstrating its readiness for full data processing through FRB-mimicking simulations and the detection of known pulsars, a RRAT, and numerous new single-pulse candidates.
Using a comprehensive dataset of 897 pulsars and a robust Bayesian framework, this study overturns the long-held consensus that pulsar radio spectra are predominantly simple power laws, revealing instead that complex curved or broken spectral shapes are the norm and that previous findings were largely statistical artifacts.
This paper presents the ASNOS dataset, a comprehensive collection of optical and near-infrared photometry for 41 Type Ia supernovae at low redshift, detailing the sample selection, data reduction, and light-curve fitting methods used to facilitate future cosmological analysis.
Using the TARDIS radiative-transfer code combined with neural network emulation and MCMC inference, this study demonstrates that single high-velocity density enhancements cannot simultaneously reproduce the observed silicon and calcium high-velocity features in Type Ia supernovae, suggesting that current delayed- and double-detonation explosion models are incomplete.