Shadow of rotating black hole surrounded by dark matterDark matter (DM), a fundamental cosmic component, motivates the study of its influence on black hole (BH) shadows, especially for spinning BHs confirmed by EHT observations. This work generalizes the…Haiyuan Feng, Ziqiang Cai, Rong-Jia Yang et al.·May 25, 2026SaveLearn
Reissner Nordstrom black holes with integrable singularity interiors supported by string distributionsThe Reissner Nordstrom (RN) black hole is characterized by two well known pathologies: a central singularity and an inner horizon associated with instabilities and a potential loss of predictability.…Milko Estrada·May 25, 2026SaveLearn
Interacting Generalized Chaplygin-Jacobi gas: Thermodynamics approachThis work investigates a cosmological model featuring an interaction between dark energy and dark matter, where the dark energy component is described by the Generalized Chaplygin-Jacobi gas (GCJG).…Gilberto Aguilar-Pérez, Miguel Cruz, Mohsen Fathi et al.·May 25, 2026SaveLearn
Simple Analytic Estimate of Black Hole Shadow Size in an Expanding UniverseThe apparent shadow of a black hole provides one of the most direct probes of strong-field general relativity. While the shadow size in asymptotically flat spacetimes is well understood, the…Debarshi Mukherjee·May 25, 2026SaveLearn
Examining the influence of anisotropy on the fundamental mode of nonradial oscillation in neutron stars on a complete general relativistic schemeThe anisotropic influence on the f-mode frequency of oscillations and dimensionless tidal deformability of neutron stars is analyzed by employing the nonradial oscillation equations for the…José D. V. Arbañil, Gabriel O. Cavalheiro, Victor B. T. Alves et al.·May 25, 2026SaveLearn
Search for primordial black holes from gravitational wave populations using deep learningGravitational waves (GWs) signals detected by the LIGO/Virgo/KAGRA collaboration might be sourced (partly) by the merges of primordial black holes (PBHs). The conventional hierarchical Bayesian…Hai-Long Huang, Zhan-He Wang, Qing-Yu Lan et al.·May 25, 2026SaveLearn
Fundamental Physics and Cosmology with TianQinThe exploration of the surrounding world and the universe is an important theme in the legacy of humankind. The detection of gravitational waves is adding a new dimension to this grand effort. What…Jun Luo, Haipeng An, Ligong Bian et al.·May 25, 2026SaveLearn
Thermodynamic topology of dyonic AdS black holes with quasitopological electromagnetism in Einstein-Gauss-Bonnet gravityIn this study, we investigate the thermodynamic topology of the high-dimensional dyonic AdS black holes with quasitopological electromagnetism in the Einstein-Gauss-Bonnet background. We first…Hao Chen, Meng-Yao Zhang, Hassan Hassanabadi et al.·May 25, 2026SaveLearn
Separating the linearized Einstein equations in the background of a Kerr black holeThe advancement in gravitational wave detection has made it possible to study the nonlinear effects in black hole perturbations, the modeling of which requires the full knowledge of the linear order…Jianwei Mei·May 25, 2026SaveLearn
Hairy Kiselev black hole with quintessential matter: themodynamic properties, sparsity of Hawking radiation, and greybody factorsIn this work, we investigate the thermodynamic properties, Hawking-radiation sparsity, and greybody-factor bounds of a hairy Kiselev black hole surrounded by a quintessential fluid. The spacetime…Faizuddin Ahmed, Fernando M. Belchior, Allan R. P. Moreira et al.·May 24, 2026SaveLearn
Absorption and scattering spectra of massive scalar waves in charged regular black hole spacetimesRegular black holes (RBHs) can be seen as possible alternatives to standard black holes (BHs), since these geometries do not have a curvature singularity. As a way of improving our knowledge of such…Marco A. A. Paula, Carolina L. Benone, Luís C. B. Crispino·May 24, 2026SaveLearn
Chaotic motion of particles around a Schwarzschild black hole in a swirling electromagnetic backgroundWe investigate the particle motion around a Schwarzschild black hole immersed in a swirling Bertotti-Robinson-Bonnor-Melvin background. This spacetime provides a physically well-motivated framework…Wenbin Li, Yu-Qi Lei, Xian-Hui Ge·May 24, 2026SaveLearn
Grey-Body Factors and Thermodynamics of Asymptotically de Sitter Black Holes in Generalized Proca TheoryGeneralized Proca theory supplements gravity with a massive vector field whose derivative self-interactions can support black holes carrying primary vector hair. In the asymptotically de Sitter…Bekir Can Lütfüoğlu, Javlon Rayimbaev, Nuriddin Kurbonov et al.·May 24, 2026SaveLearn
Field Sources for Dark Matter Black HolesWe investigate the field-theoretic realization of regular black holes sourced by dark matter halo profiles within nonlinear electrodynamics (NED) minimally coupled to gravity. Starting from a static,…G. Alencar, C. R. Muniz, Francisco Tello-Ortiz·May 24, 2026SaveLearn
Spacetime discreteness via consistent microscopic measurementThe physical origin of spacetime discreteness remains a central open problem in quantum gravity, with most existing approaches relying on specific microscopic structures or model-dependent…Weihu Ma, Yu-Gang Ma·May 24, 2026SaveLearn
Thermodynamics of homogeneous Universes: de Sitter, Bonnor-Melvin and static EinsteinIn the theories, in which dynamic gravitational field emerges from the underlying matter fields, the gravitational field can be considered as a part of matter. Using this approach, we construct the…G. E. Volovik·May 24, 2026SaveLearn
Tamm-Rubilar branch diagnostics for Drummond-Hathrell photon propagation: Schwarzschild calibration and a Kerr weak-lensing benchmarkThis paper develops a local Tamm-Rubilar branch diagnostic for supplied nondispersive, pair-symmetric constitutive tensors and uses it as a preprocessing layer for polarization-resolved ray…José Rodal·May 24, 2026SaveLearn
Approximate Models for Gravitational MemoryThe large-distance approximation of a sandwich gravitational wave by a continuous but not necessarily smooth profile provides us with an approximate analytic description of particle motion in a…Q-L Zhao, P. -M. Zhang, M. Elbistan et al.·May 24, 2026SaveLearn
Resonances in the early UniverseIn the present paper, we study a Friedmann-Lemaître-Robertson-Walker (FLRW) quantum cosmology model with positively curved spatial sections. The matter content of the model is given by a radiation…D. L. Canedo, G. Oliveira-Neto, G. A. Monerat et al.·May 24, 2026SaveLearn
Thermodynamics of Black Holes, far from EquilibriumAs in thermodynamics, the celebrated first law of black hole mechanics relates infinitesimal changes in the properties of nearby equilibrium states of black holes (without reference to any physical…Abhay Ashtekar, Daniel E. Paraizo, Jonathan Shu·May 24, 2026SaveLearn
Exact Black Hole Solutions in Bumblebee Gravity with Lightlike or Spacelike VEVSMotivated by recent developments in Lorentz-violating theories of gravity, we obtain new black hole solutions within the framework of bumblebee gravity, where the bumblebee vector field possesses two…Jia-Zhou Liu, Shan-Ping Wu, Shao-Wen Wei et al.·May 24, 2026SaveLearn
Image of a quantum-corrected black hole without Cauchy horizons illuminated by a static thin accretion diskLatest advances in effective quantum gravity propose a quantum-corrected black hole solution that avoids Cauchy horizons. This paper studies the images of this black hole when illuminated by a static…Shilong Huang, Jiawei Chen, Jinsong Yang·May 24, 2026SaveLearn
D-dimensional black holes in extended Gauss-Bonnet gravityIn this work, we present charged spherically symmetric anti-de Sitter black hole solutions in d dimensions (d ≥ 5) within the framework of extended Gauss--Bonnet gravity. Moreover, by…Jia-Zhou Liu, Si-Jiang Yang, Chun-Chun Zhu et al.·May 24, 2026SaveLearn
Testing loop quantum gravity through EHT observations of M87* and Sgr A* using rotating holonomy-corrected black holesThe Event Horizon Telescope (EHT) has provided a new tool for testing the strong-field regime of gravity by imaging the shadows of M87* and Sgr A*. These observations provide the first real…Heena Ali, Sushant G. Ghosh·May 23, 2026SaveLearn
Shaping black hole resonances I. Black hole ringdown as a spectral filtering processThe ringdown of a perturbed black hole (BH) can be described as a superposition of quasinormal modes (QNMs), whose frequencies are determined by the spacetime geometry while their amplitudes depend…Alejandro Svyatkovskyy Kholyavka, Jose Antonio León Vega, Samuel Gómez Gómez et al.·May 23, 2026SaveLearn