Neutron Stars as Perfect Fluids: Extracting the Linearized Response FunctionWe develop an effective field theory framework for the conservative linear tidal response of a relativistic neutron star modeled as a perfect fluid with conserved particle number. Starting from the…Irvin Martínez-Rodríguez·Jun 25, 2026SaveLearn
Kinetic theory for a relativistic charged gas: mathematical foundations of the hydrodynamic limit and first-order results within the projection methodThis work derives first-order constitutive equations for a relativistic charged gas using the Chapman-Enskog expansion of near-equilibrium solutions to the Boltzmann equation, implemented via a novel…Carlos Gabarrete, Ana Laura García-Perciante, Olivier Sarbach·Jun 25, 2026SaveLearn
Gravitational Waves from Superradiant Cloud Level TransitionUltralight boson clouds can form around black holes in binaries through superradiance, and undergo resonant level transitions at certain orbit frequencies. In this work, we investigate the…Si-Tong Peng, Jun Zhang·Jun 25, 2026SaveLearn
Massive boson stars: Waveform-based branch diagnosis with neural reconstructionWe investigate whether gravitational waveforms from massive boson-star mergers can be used to diagnose the underlying merger outcome. Using an existing numerical-relativity catalogue, we construct a…Bo-Xuan Ge·Jun 24, 2026SaveLearn
Stueckelberg Gauge Invariant Formulation of MOGWe develop a Stueckelberg gauge-invariant formulation of modified gravity (MOG). The massive vector field is made gauge-invariant by introducing a compensating scalar field, without requiring a Higgs…John W. Moffat·Jun 24, 2026SaveLearn
Effect of the magnetic monopole charge on Dirac entanglement and Bell non-locality in Hayward spacetimeWe investigate bipartite quantum correlations of Dirac fields in the spacetime of a Hayward regular black hole. Using the Wootters concurrence and the CHSH Bell parameter, we analyze the influence of…Abdessamie Chhieb, Mohamed Ouchrif·Jun 24, 2026SaveLearn
Thermodynamics of thin-shell wormholesWe develop a unified thermodynamic description of dynamic thin-shell wormholes, starting from the transparent (vacuum bulk) case and then relaxing the transparency condition to include bulk matter…Francisco S. N. Lobo, Manuel E. Rodrigues·Jun 24, 2026SaveLearn
Time-domain framework for the Teukolsky equation with a particle source using comoving hyperboloidal coordinatesWe present a scheme and implementation code for time-domain integration of the Teukolsky equation in 1+1 dimensions with a point-particle source, based on comoving, spatially compactified…Aditya Vaswani, Leor Barack, Oliver Long et al.·Jun 24, 2026SaveLearn
Extended Thermodynamics and Throttling Process of Charged AdS Black Holes in ModMax-dRGT Massive Gravity with Sharma-Mittal EntropyWe investigate the extended thermodynamics, including the Joule-Thomson expansion and P-V criticality, of a four-dimensional charged anti-de Sitter (AdS) black hole within the combined framework of…Naba Jyoti Gogoi, Hassan Hassanabadi, Himasri Pinapothu et al.·Jun 24, 2026SaveLearn
Gravitational Wave Signatures from Periodic Orbits around a Non--commutative Schwarzschild Black HoleIn this work, we investigate massive particle motion and the gravitational wave emission generated by periodic trajectories around a non--commutative Schwarzschild black hole sourced by a…N. Heidari, A. A. Araújo Filho, I. P. Lobo et al.·Jun 24, 2026SaveLearn
Electrically Charged Distorted Black Holes: Thermodynamics, Particle Dynamics, and Quasinormal SignaturesWe construct an exact solution for the electrically charged extension of a distorted black hole spacetime within Einstein-Maxwell theory using the Harrison transformation. The resulting solution…Gamal G. L. Nashed, Salvatore Capozziello·Jun 24, 2026SaveLearn
Images of Braneworld black holes with radiatively inefficient accretion flowsHorizon-scale imaging acts as a transformative tool for probing spacetime geometry, enabling stringent tests of gravitational theories in the strong-field regime. The Casadio-Fabbri-Mazzacurati(CFM)…Chengjia Chen, Yin Hao, Zelin Zhang et al.·Jun 24, 2026SaveLearn
Charged Axially Symmetric Exponential Metric: Exact Solutions to the Einstein-Maxwell EquationsWe construct and analyze charged and magnetized extensions of the axially symmetric exponential metric, that is known as the Curzon-Chazy spacetime (CCS) within the Weyl class. Working within the…S. Habib Mazharimousavi·Jun 24, 2026SaveLearn
Radial Perturbations of Black Holes in DHOST TheoriesWe study radial perturbations of static black holes with primary hair in a subfamily of degenerate higher-order scalar-tensor (DHOST) theories. We recast the equation of motion for the monopole…Christos Charmousis, Simon Iteanu, David Langlois et al.·Jun 24, 2026SaveLearn
Separability of the motion of spinning test particles in curved space-timeSolving for the motion of spinning test particles in curved spacetimes is important for modeling gravitational-wave inspirals of spinning compact binaries. We build a Hamiltonian formalism in…Vojtěch Witzany, Viktor Skoupý·Jun 24, 2026SaveLearn
Temporal Correlation Statistic for Intrinsic Phase Fluctuation in Double White Dwarf Gravitational-Wave SignalsWe present a framework to probe intrinsic stochastic fluctuation in the orbital phase evolution of long-lived double white dwarf binaries through gravitational-wave observations with LISA. To capture…Naoki Seto·Jun 24, 2026SaveLearn
Exploring Gravitational Wave Science Frontiers with the SKAOThe Square Kilometre Array Observatory (SKAO) will be an important component of the global gravitational wave network. This article provides an overview of chapter eight of the Advancing Astrophysics…Nicola Bellomo, Philippa Cole·Jun 24, 2026SaveLearn
Times of arrival (TOA) of signals in the Kerr-MOG black holeModified gravity (MOG) theories are alternatives to general relativity (GR) that arose primarily from the need to explain the observed galactic flat rotation curves without invoking the elusive dark…G. Y. Tuleganova, R. N. Izmailov, R. Kh. Karimov et al.·Jun 24, 2026SaveLearn
Galactic microlensing by acoustic Schwarzschild black holesThis work explores the application of acoustic black holes as a novel class of lenses in Galactic microlensing, potentially representing dark matter halo objects. While sharing key features like an…G. F. Akhtaryanova, R. Kh. Karimov, U. K. Khidirov et al.·Jun 24, 2026SaveLearn
Covariant variation for point-particle LagrangiansStructureless test particles in general relativity follow geodesics. For extended bodies, higher-order multipole moments lead to departures from geodesic motion; in particular, spinning test bodies…Finnian Gray, Sebastian Murk, Daniel R. Terno·Jun 24, 2026SaveLearn
When Black Holes Can Wear PantsWe investigate the conditions under which black hole fragmentation, the splitting of a black hole horizon into multiple smaller ones, may occur. The simplest realization is that of a single black…Giacomo Cacciapaglia, Manuel Del Piano, Francesco Sannino et al.·Jun 24, 2026SaveLearn
Resonances as signatures of scalar clouds in eccentric extreme-mass-ratio inspiralsUltralight scalars arise naturally in many extensions to the Standard Model and are compelling dark matter candidates. Around spinning black holes, dense scalar clouds could form through the…Qi-Xuan Xu, Richard Brito, Riccardo Della Monica et al.·Jun 24, 2026SaveLearn
Embedding Wormholes and Dyonic Black Strings in Warped Braneworlds via Local Sum RulesBuilding on our previous work [1], where the Local Sum Rules (LSR) were established, we investigate the construction of compact objects in Randall-Sundrum braneworlds supported by matter fields that…G. Alencar, T. M. Crispim, Francisco S. N. Lobo·Jun 24, 2026SaveLearn
From rotating attractors to extremal black holes with axionic hairWe study extremal, rotating black holes in four-dimensional Einstein-Maxwell-axion (EMA) theory through a combined near-horizon and bulk analysis. At the level of the near-horizon extremal geometry…Etevaldo dos Santos Costa Filho·Jun 24, 2026SaveLearn
Mass--radius relations, surface redshift, and echo time of neutron-star--wormhole system with chaotic magnetic field and anisotropic matterIn this paper, we formulate neutron-star--wormhole (NSWH) systems supported by two scalar fields, allowing for both chaotic magnetic field and pressure anisotropy of the neutron fluid. The wormhole…Muhammad Lawrence Pattersons, Freddy Permana Zen, Hadyan Luthfan Prihadi et al.·Jun 24, 2026SaveLearn