1663 papers
This paper validates the accuracy of prior-informed Fisher-matrix analyses by comparing them against real gravitational-wave data from GWTCs, demonstrating that while priors are crucial for handling parameter degeneracies, the Fisher approximation remains a reliable tool for future Einstein Telescope science-case studies.
This paper introduces a new set of non-orbit-averaged, gauge-invariant post-Newtonian equations up to 2.5 order that accurately describe the non-adiabatic evolution of eccentric black-hole binaries across all eccentricities, revealing the limitations of traditional orbit-averaged approximations like Peters' equations at the first pericenter passage.
This paper revisits the production of axion-like particles coupled to electrons in supernovae by incorporating previously neglected processes and thermal corrections to derive analytical emissivity rates, ultimately updating astrophysical constraints from SN 1987A across various coupling regimes.
This paper advocates for comparing astrophysical population-synthesis models directly to gravitational-wave data in observable space rather than reconstructing the underlying population, demonstrating that this approach respects model validity domains and enables unbiased inference of the observable compact-binary population using LIGO-Virgo-KAGRA data.
This study analyzes LIGO-Virgo-KAGRA data to confirm the existence of a pair-instability mass gap starting at approximately 44.3 solar masses, constrains the critical nuclear reaction rate, and identifies two distinct black hole populations—low-spin primordial remnants and high-spin hierarchical mergers—that explain the presence of massive black holes within the gap.
This paper critiques the widely used Eastman & Pinto 1993 line-expansion formalism for underestimating photon emissivity in astrophysical radiative transfer simulations, proposes a modified frequency-bin averaging method to correct these discrepancies, and highlights the critical role of micro-plasma electron excitation cutoffs in opacity calculations.
This paper demonstrates that black holes with significant synchronized or resonant bosonic hair are dynamically unstable, causing their event horizons to be ejected from the center of their scalar environments in a process termed "splitting."
This paper presents a numerical study demonstrating that while massive particles scattering off Reissner-Nordström black holes are confined to a narrow range of deflection angles due to an event horizon, those interacting with naked singularities are scattered in all directions by a repulsive core, leading to distinct observable signatures in tidal disruption events.
This paper proposes a graph-based method using pulsar timing residuals to detect the stochastic gravitational wave background by analyzing network structural characteristics, demonstrating its ability to identify signals with a strain amplitude of and providing weak evidence for an SGWB in the NANOGrav 15-year dataset.
This study employs the model-independent GLANCE pipeline to quantify the false alarm rates of incorrectly identifying unlensed binary black hole mergers as lensed events, revealing that such misclassifications occur in approximately 0.01% of pairs with time delays exceeding 1000 days under current LIGO sensitivities.
This study numerically models radiation-mediated shocks in mildly magnetized relativistic outflows to demonstrate that even weak magnetic fields significantly alter shock profiles and photon spectra through synchrotron self-absorption and subshock formation, while proton-induced high-energy radiation remains dynamically negligible.
This study demonstrates that while varied cosmic ray feedback mechanisms from active galactic nuclei successfully quench star formation in massive galaxies to match observed scaling relations, they produce significantly different circumgalactic medium properties, suggesting that multi-wavelength observations of halo gas could constrain the specific physical nature of AGN feedback.
This paper presents the results of the first 24,186 hours of the GREENBURST commensal survey using the Green Bank Telescope, which discovered a new 2.2-second pulsar (PSR J0039+5407) and monitored three known repeating FRBs, while also highlighting the challenges of its single-beam design in distinguishing genuine transients from radio frequency interference.
Using a Generalized Extreme Value distribution analysis of the second CHIME/FRB catalog, this study identifies the exceptionally bright one-off burst FRB 20250316A as a profound statistical outlier with a heavy-tailed peak flux distribution and a fluence that far exceeds theoretical bounds, suggesting it represents a rare, extreme event potentially marking a distinct physical channel in fast radio burst luminosity.
This paper presents observations of the luminous Type IIb supernova SN 2017ati, revealing that its exceptional brightness and late-time evolution are best explained by a massive progenitor () whose explosion was powered by a combination of radioactive nickel decay and energy injection from a central magnetar.
This paper proposes a minimal two-population framework that consistently explains the complex spectral features of Galactic cosmic-ray protons and helium from GeV to PeV energies through a transition between two distinct source populations, eliminating the need for nearby sources or non-standard acceleration assumptions.
This paper investigates spin-0, 1, and 1/2 field perturbations of four-dimensional Einstein-Skyrme anti-de Sitter black holes by computing quasinormal modes, greybody factors, and strong cosmic censorship parameters, revealing a Konoplya-Zhidenko anomaly in the first overtone and demonstrating that the Christodoulou parameter remains well below the censorship threshold due to the theory's intrinsic constraints.
Time-resolved XRISM spectroscopy of MCG-6-30-15 reveals that the X-ray corona around its rapidly spinning black hole undergoes significant structural evolution, expanding and accelerating during flares while collapsing to a compact region during flux dips, demonstrating that accounting for such dynamic variability is essential for accurately measuring black hole spin via X-ray reflection.
This paper presents the first constraints on sub-asteroid mass primordial black holes as dark matter using high-energy neutrino data from IceCube and ANTARES, establishing independent limits that future detectors like IceCube-Gen2 and KM3NeT could significantly improve.
This paper presents an analytical model demonstrating that millisecond pulsars with intermediate-mass progenitors () form via stable Roche-lobe overflow, resulting in orbital eccentricities comparable to those of lower-mass systems due to a weak dependence on envelope mass, while suggesting that more massive white dwarfs likely originate from a distinct unstable channel.