Scalar quasinormal and quasibound states of weakly magnetized Ernst--Schwarzschild spacetime: a confluent-Heun Wronskian approachWe study the quasinormal-mode and quasibound-state spectra of a massless scalar field in weakly magnetized Ernst--Schwarzschild spacetime. In the separated O(B02) regime, the Klein--Gordon…Danilo S. Ferreira, Luis B. Castro·Sep 15, 2026·Top 69%SaveLearn
Exact Hairy Black Holes in Higher-Curvature Scalar--Tensor GravityWe construct exact hairy black holes in Lovelock--Horndeski gravity and establish a relation between horizon topology, scalar hair and covariant charges. Rooted in the dimensional reduction of…Tianhao Wu·Sep 15, 2026·Top 32%SaveLearn
Massively parallel transdimensional sampling with data assimilation: an application to LISA galactic binariesTransdimensional Bayesian inference is becoming a key ingredient in gravitational-wave astronomy. In many relevant applications, the number of components needed to describe the data is not known a…Gabriele Demasi, Walter Del Pozzo·Sep 15, 2026·Top 20%SaveLearn
Hu-Sawicki f(R) Gravity in a Non-Flat Universe: Constraints from DESI-DR2, BBN, and Type Ia SupernovaeLate-time cosmic acceleration is conventionally ascribed to a cosmological constant, though ΛCDM continues to face several theoretical difficulties that keep alternative gravity models under active…Saurabh Verma, Manish Yadav, Archana Dixit et al.·Sep 15, 2026·Top 56%SaveLearn
A Fully Analytic Expression for the 2PN N-Body HamiltonianWe present a complete analytic expression for the N-body Hamiltonian of nonspinning point particles at second post-Newtonian (2PN) order in the Arnowitt-Deser-Misner (ADM) gauge. Recent work…Felix M. Heinze, Gerhard Schäfer, Bernd Brügmann·Sep 15, 2026·Top 4%SaveLearn
Quasinormal modes of Kerr-Newman-de Sitter black holes from Heun connection formulaeWe study quasinormal modes governed by the Teukolsky equation in Kerr-Newman-de Sitter spacetime, formally treating the spin weight and field charge as arbitrary parameters. We use exact Heun…Hideo Furugori, Naotaka Kubo, Hayato Motohashi et al.·Sep 15, 2026SaveLearn
Symmetry of the Klein-Gordon Equation under Disformal Transformations with Higher-Order DerivativesScalar-Tensor theories extend General Relativity (GR) by including both a scalar field and a metric tensor in describing gravity. Although the matter sector is minimally coupled to the metric in GR,…Yurev Ivan Ross B. Carag, Allan L. Alinea·Sep 15, 2026·Top 81%SaveLearn
Critical and extremal gravitational collapse of a spherical charged scalar field in 4+1 spacetime dimensionsWe numerically investigate the gravitational collapse of a charged scalar field coupled to the Einstein and Maxwell equations in spherical symmetry, in 4+1 spacetime dimensions. At the threshold of…Satwik Mittal, Carsten Gundlach, Laetitia Martel·Sep 15, 2026·Top 55%SaveLearn
Pseudospectrum of Braneworld PerturbationsPseudospectral analysis provides a powerful way to probe the spectral stability of non-self-adjoint operators and has been widely used in black hole physics, but its application to braneworld…Hai-Long Jia, Wen-Di Guo, Yun-Tao Gu et al.·Sep 15, 2026·Top 78%SaveLearn
Impact of the Host Galaxy on the Search for Gravitational-Wave Microlensing by Compact ObjectsGravitational-wave (GW) microlensing occurs when an intervening compact object causes diffraction of the GW, imprinting characteristic frequency-dependent modulations on the observed signal. Current…Uddeepta Deka, Apratim Ganguly, Soham Bhattacharyya et al.·Sep 15, 2026·Top 44%SaveLearn
Limits on the Inferred Hubble Constant Bias from a Local McVittie Gravitational FieldWe examine the exact propagation of light in a McVittie spacetime to quantify the observational bias introduced on the inferred Hubble constant H0 by a localized central mass embedded in an…Daniele Gregoris·Sep 15, 2026·Top 58%SaveLearn
The Null Energy Condition through the Lens of Optimal Transport: Smooth and Non-Smooth SpacetimesWe survey recent developments on the null energy condition (NEC) from the perspective of optimal transport, with emphasis on non-smooth Lorentzian geometry. After recalling the role of classical…Fabio Cavalletti, Davide Manini, Andrea Mondino·Sep 15, 2026·Top 4%SaveLearn
An Abel-Inversion Formalism for Spacetime Metric Reconstruction from Light DeflectionWe develop an inverse lensing formalism for reconstructing the metric function of a static, spherically symmetric spacetime directly from the gravitational deflection angle of light. By formulating…Aniruddha Ghosh, Ujjal Debnath·Sep 15, 2026·Top 74%SaveLearn
At Most One Inner Killing Horizon in Stationary Black HolesStationary-axisymmetric black holes are the standard theoretical framework for astrophysical black holes, yet their interiors remain largely inaccessible: the absence of a hypersurface-orthogonal…Jing-Peng Ye, Yu-Xuan Li, Run-Qiu Yang et al.·Sep 15, 2026·Top 2%SaveLearn
Radial Stress and the Innermost Stable Circular Orbit of a Bardeen Black Hole in a Dark Matter Halo: A First-Order Response CriterionA dark matter density profile alone does not determine the spacetime around a black hole; the radial stress must be prescribed separately and governs the strong-field orbital response. We study a…Yang Deng, Jia-Zhou Liu, Wen-Di Guo·Sep 15, 2026·Top 65%SaveLearn
Black-Hole First Laws and Horizon Constraints: A Differential Rank CriterionThermodynamic rewritings of horizon equations depend on which relations are varied and which have already been imposed. We formulate a differential rank criterion that makes these choices explicit.…Gunn Kim·Sep 15, 2026·Top 38%SaveLearn
Thermodynamic topological classification of magnetically charged slowly rotating Kerr black holes in nonlinear electrodynamics with a cosmological constantIn this work, we investigate the thermodynamic topological classification of slowly rotating Kerr black holes with magnetic charge in nonlinear electrodynamics (NLED) using a reduced grand-canonical…Peng Zhao, Yu-Die Wan, Zheng-Wen Long·Sep 15, 2026·Top 97%SaveLearn
Bridging Between Statistical Mechanics and Black Hole Evolution: Theoretical FormalismBlack holes in the Universe span nearly ten orders of magnitude in mass over a large cosmic timescale, dating back to at least the Universe's early history, when it was only a few hundred million…Suvodip Mukherjee·Sep 15, 2026·Top 52%SaveLearn
Study of Null Geodesics and their Stability in Kalb-Ramond Black HolesWe investigate null geodesics and their stability in four-dimensional charged Kalb-Ramond black holes with a cosmological constant. The non-vanishing vacuum expectation value of the background…P. A. González, Marco Olivares, Eleftherios Papantonopoulos et al.·Sep 15, 2026·Top 93%SaveLearn
Weak in the Presence of Beauty: Gravitational waves from the mergers of black holes and neutron stars as a messengerIn 2025, the 4th Gravitational Wave Transient Catalog reported the discovery of over 200 gravitational wave events since 2015. These gravitational waves (GWs) are emitted by compact binary…Fiona H. Panther, Jordan W. N. Moncrieff, Mac L. Button·Sep 15, 2026SaveLearn
Charging of rotating black holes: kinetic simulations of black hole magnetospheresWhether a rotating black hole (BH) immersed in an external magnetic field charges up to the Wald value Q W=2aMB, where M and a are the BH mass and spin parameter, and B is the strength…Martin Kološ, Farukh Abdulkhamidov, Arman Tursunov et al.·Sep 15, 2026·Top 8%SaveLearn
Schwarzschild solution from a Raychaudhuri-Huygens relationNull-congruences encode the causal structure of spacetime, describing a phase space of radiation channels, whose expansion scalar θ satisfies the Raychaudhuri equation. In spherical symmetry, the…Maurice H. P. M. van Putten·Sep 14, 2026·Top 100%SaveLearn
A closer look at Viaggiu Holographic Dark Energy with Statefinder Hierarchy and Fractional Growth DiagnosticsWe employ the statefinder hierarchy along with the fractional growth parameter to investigate the recently proposed noninteracting Viaggiu holographic dark energy (VHDE) model with the future event…Somnath Saha·Sep 14, 2026·Top 99%SaveLearn
Prescription Dependence in Nonextensive Bose--Fermi State Counting near Black-Hole HorizonsNonextensive Bose and Fermi state is well studied with counting near black-hole horizons in a one-function, nonextremal, static, spherically symmetric class. The calculation is organized around a…Ke-Ming Shen, Ying Xiao, Yang Liu·Sep 14, 2026·Top 85%SaveLearn
General first-order constitutive equations for a relativistic dissipative multi-component fluid in the presence of a weak background electromagnetic fieldIn this work we establish general constitutive equations for a relativistic plasma composed of an arbitrary number of classical, charged, and chemically non-reacting species in the presence of a…J. Félix Salazar, Ana Laura García-Perciante, Olivier Sarbach·Sep 14, 2026·Top 10%SaveLearn