1406 papers
Using IllustrisTNG simulations, this study demonstrates that thermal emission from warm gas substructures (WCGM) inside clusters and diffuse filaments (WHIM) outside them successfully reproduces the observed soft X-ray excess, suggesting this excess serves as a proxy for the dynamical state of galaxy clusters.
This paper presents a deep learning pipeline based on a ConvLSTM2D architecture that effectively detects strongly lensed Type Ia supernovae in multi-band time-series imaging data, achieving high true-positive rates with low false-positive rates by the 7th to 9th observation to enable timely follow-up for upcoming surveys like LSST.
This paper presents new MeerKAT observations of 21 massive, dynamically active galaxy clusters that reveal extended radio emission in all targets, including several new halos and relics, thereby confirming a power-mass correlation for halos and demonstrating the ability to detect low-power relics to better test numerical simulations of cluster evolution.
This paper presents an improved binary black hole search discriminator that utilizes singular value decomposition of real non-Gaussian noise transients to construct a statistic, demonstrating performance comparable to sine-Gaussian-based methods while offering a more direct approach for modeling complex glitches.
By analyzing a unique high-redshift system where a massive quiescent galaxy's neutral outflow is observed against a background quasar, this study derives empirical calibrations for converting trace element column densities to hydrogen, confirming that local relations for Na I are applicable for estimating gas outflows driving galaxy quenching while revealing significant discrepancies for Mg II likely due to dust depletion variations.
This paper uses particle-in-cell simulations to demonstrate that asymmetric erosion of intense radio pulses in longitudinally magnetized plasma can generate circular polarization from linearly polarized inputs, offering a potential mechanism to explain the circularly polarized fast radio bursts observed from magnetars.
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.
By applying a prior-free forward-modeling approach to the Cosmicflows-4 catalog, this study reconstructs the local velocity field to derive a Hubble constant of $75.9\pm1\Lambda$CDM predictions.
By combining deep LegacySurvey imaging with MaNGA spectroscopy, this study reveals that the assembly history of low-redshift massive early-type galaxies is intricately linked to their central gravitational potential and outer stellar halos, demonstrating that distinct imprints of both in-situ star formation and ex-situ accretion shape their stellar populations beyond simple scaling relations.
Using CLASH-VLT data, this study reveals that while the average velocity anisotropy profile of massive galaxy clusters aligns with cosmological simulations, significant individual variance exists that reflects unique merging histories and cannot be explained by a single universal profile.
The authors introduce the Web-Halo Model (WHM), a parameter-free framework that integrates collapsed structures like filaments and sheets with 1-loop Lagrangian Perturbation Theory to achieve sub-2% accuracy in predicting the non-linear matter power spectrum across various redshifts and cosmologies, outperforming existing models like HMcode-2020 without requiring any free fitting parameters.
Using direct N-body and Monte Carlo simulations, this study demonstrates that extremely dense, low-metallicity young massive clusters observed by JWST inevitably undergo runaway stellar collisions to form very massive stars, which rapidly collapse into intermediate-mass black hole seeds of $10^310^5 M_\odot$, providing a viable pathway for early black hole formation and explaining high-redshift nitrogen abundances.
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 paper introduces the concept of the Energy Transition Domain (ETD) based on mechanical energy within the Earth-Moon planar circular restricted three-body problem and utilizes it to develop an effective method for constructing gravity-assist escape trajectories from low Earth and geosynchronous orbits.
This study demonstrates that while an anti-de Sitter vacuum in the dark energy sector can enhance early structure formation, it fails to simultaneously explain the JWST high-redshift galaxy excess and satisfy cosmological constraints from the CMB and low-redshift probes, thereby reinforcing the necessity of evolving astrophysical properties to resolve the tension.
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 study analyzes COSMOS-Web galaxy groups from z=0 to z=3.7 using machine learning and multi-method approaches to reveal that quiescent galaxy fractions build up steadily from z=1.5–2 with earlier growth in richer groups, identifies a rare overdensity at z=3.4, and finds that while X-ray faint groups have lower quiescent fractions, the red sequence's slope and scatter remain stable over approximately 12 billion years.