First Overtone Mode in the Ringdown Signal of GW231028The properties of a remnant black hole can be probed by analyzing the gravitational waves emitted during its ringdown phase. This signal provides a direct test of general relativity in the…Hai-Tian Wang·Jul 22, 2026SaveLearn
Electric Penrose process in spherically symmetric regular black holes with and without a cosmological constantWe investigate the electric Penrose process in Ayón-Beato-García (ABG) black holes, both in the presence and absence of a cosmological constant, presenting, to the best of our knowledge, the first…Haowei Chen, Hengyu Xu, Yizhi Zhan et al.·Jul 22, 2026SaveLearn
A χ2 statistic for the identification of strongly lensed gravitational waves from compact binary coalescencesGravitational waves (GWs) emanated by stellar mass compact binary coalescences (CBCs), and lensed by galaxy- or cluster-scale lenses, will produce two or more copies of the GW signal. These will have…Sudhir Gholap, Kanchan Soni, Shasvath J. Kapadia et al.·Jul 22, 2026SaveLearn
An obstruction and residual-completion theory for Newman--Janis deformationsWe formulate an obstruction and residual-completion theory for Newman-Janis-type deformations of black hole seeds, where Newman-Janis-type includes both the original complex-coordinate Newman-Janis…Reggie C. Pantig, Ali Övgün·Jul 21, 2026SaveLearn
Repetitive Penrose Process in Rastall Rotating Black Holes Immersed in Quintessence Dark EnergyWe investigate the repetitive Penrose process in the spacetime of a Rastall rotating black hole surrounded by a quintessence dark energy field. After reviewing the fundamental properties of the black…Ali Ahmad Sabir, Muhammad Israr Aslam, Abdul Malik Sultan et al.·Jul 21, 2026SaveLearn
Schrödinger perturbation theory for black hole quasinormal modesDeviations from vacuum general relativity (such as modified theories or the presence of an environment) produce small shifts in black hole quasinormal mode (QNM) spectra. These effects are becoming…Jacopo Lestingi, Laura Sberna, Stephen R. Green·Jul 21, 2026SaveLearn
Tachyonic modes as a resonant system in weakly curved stellar spacetimesA real scalar field nonminimally coupled to the curvature of an astrophysical object can develop an effective potential that supports, alongside stable oscillatory solutions, a set of tachyonic modes…Bruno S. Felipe, Maurício Richartz·Jul 21, 2026SaveLearn
The general set of Noetherian energy-momentum tensors in linearized gravity: mathematical frameworkEnergy-momentum tensors are foundational objects which are uniquely defined in standard physical field theories such as electrodynamics and Yang-Mills theory. In general relativity, and in particular…Lydia Beth Taylor, Mark Robert Baker·Jul 21, 2026SaveLearn
Optomechanical transfer factors for scattered light noise estimations in the beamtubes of ground-based gravitational wave detectorsScattered light is a relevant noise source in current ground-based gravitational-wave detectors and a critical design concern for next-generation observatories. Beamtube scattered light estimates…M. Andrés-Carcasona·Jul 21, 2026SaveLearn
Gravitational wave echoes as probes of the maximum mass of strange stars in quadratic curvature-matter coupled gravityGravitational wave astronomy provides an exemplary avenue to study exotic compact stars with utmost precision. Recent analyses of GW170817 have reported possible post-merger gravitational wave echoes…Debadri Bhattacharjee, Pradip Kumar Chattopadhyay, Kazuharu Bamba·Jul 21, 2026SaveLearn
GWTC-5.0: Tests of General RelativityThe signals from the LIGO-Virgo-KAGRA network of gravitational-wave (GW) detectors allow us to perform sensitive tests of general relativity (GR) in the dynamical and strong-field regime of gravity.…The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration et al.·Jul 21, 2026SaveLearn
Calibration of the AdvancedVirgo+ Gravitational Wave Detector and Reconstruction of the Detector Strain h(t) during the Observing Run O4From 10 April 2024 15:00 UTC to 18 November 2025 16:00 UTC, the AdvancedVirgo+ gravitational wave detector participated in the LIGO-Virgo-KAGRA O4 observing run, started on 24 May 2023 15:00 UTC.…Virgo Collaboration·Jul 21, 2026SaveLearn
Plasma-Induced Modifications of the Shadows of Rotating Bardeen Black Holes with Perfect Fluid Dark MatterWe study the optical appearance of a rotating regular Bardeen black hole embedded in perfect fluid dark matter (PFDM) when photon propagation occurs through a plasma medium. Three plasma models are…Gowtham Sidharth M, Sanjit Das·Jul 21, 2026SaveLearn
Gravity-Induced Entanglement of Quantum Clocks as a Signature of Genuinely Quantum Local Position InvarianceWhether the principles of general relativity extend to a quantum regime remains one of the open questions in modern physics. In classical general relativity, Einstein's equivalence principle…Eyuri Wakakuwa·Jul 21, 2026SaveLearn
Accretion of multipolar massive complex scalar field packets by a Schwarzschild black holeWe study the finite-time accretion of complex massive scalar wave packets by a Schwarzschild black hole in the test-field regime, with parameters motivated by ultralight fuzzy dark matter around…Flavio Rosales-Infante, Ivan Alvarez-Rios, Francisco S. Guzman·Jul 21, 2026SaveLearn
Quasinormal Ringdown and Echoes in Accreting Exotic Compact ObjectsExotic compact objects (ECOs) may produce late-time gravitational-wave (GW) echoes, but sufficiently compact ECOs undergoing realistic accretion may eventually form an event horizon. We investigate…Chanchal Sharma, Kabir Chakravarti, Sudipta Sarkar·Jul 21, 2026SaveLearn
On Generalized (Conformal) Killing TensorsWe study higher-rank generalized Killing tensors with mixed symmetries, providing a couple of examples and applications. It is shown that such objects naturally exist in higher-dimensional rotating…Cynthia Arias, David Kopčan, David Kubiznak et al.·Jul 21, 2026SaveLearn
Defrosting the Born-Infeld dyonic frozen star with tachyon matter: spectrum of oscillationsThe frozen star is a model for the interior of an astrophysical black hole that is externally indistinguishable from the singular geometry of a Schwarzschild black hole, even though it contains no…Ram Brustein, A. J. M. Medved, Tamar Simhon·Jul 21, 2026SaveLearn
Tidal Deformability of Neutron Stars in Bumblebee Gravity: Probing Lorentz Symmetry Breaking with Gravitational WavesWe investigate the tidal properties of static neutron stars in the Neves--Gardim branch of bumblebee gravity, a vector--tensor theory in which a nonzero vacuum expectation value of the bumblebee…Ayan Banerjee, sherzod Sayfiyev, Muhtarama Radjapbaeva et al.·Jul 21, 2026SaveLearn
Novel extended inner shadow in images of Johannsen-Psaltis black holes with thin accretion disksThe Johannsen-Psaltis (JP) metric is constructed by introducing deviation parameters into the Kerr metric. The presence of these deviation parameters provides additional degrees of freedom for…Xinyu Wang, Xiaobao Wang, Xin-Yang Wang et al.·Jul 21, 2026SaveLearn
Scale-invariant Schrödinger geometry in symmetric teleparallel gravityWe construct a locally scale-invariant formulation of Schrödinger geometry in symmetric teleparallel gravity. The unique scale transformation preserving autoparallelism, torsionlessness and the…Wei-Zhi Liu, Jing-Ying Wang, Shi-Dong Liang et al.·Jul 21, 2026SaveLearn
Stochastic template banks for GW searches using low-discrepancy sequencesMatched filtering remains the most sensitive method for detecting gravitational waves from compact binary coalescences. The efficiency of such searches depends on how well a discrete template bank…Tarun Kumar, Anand S. Sengupta·Jul 21, 2026SaveLearn
Periodic Orbits and Gravitational Wave Signatures around the Bonanno--Reuter Regular Black HoleTimelike geodesics, periodic orbits, and their associated gravitational-wave signatures are examined in the spacetime of a Bonanno--Reuter regular black hole, a geometry arising from Asymptotically…Mohammad Reza Alipour, Mohammad Ali S. Afshar, Saeed Noori Gashti et al.·Jul 21, 2026SaveLearn
Reframing of Information Geometry via Symmetric Teleparallel GravityInformation geometry has traditionally been formulated within the framework of Riemannian geometry and dual affine connections. This work aims to reframe the foundational structure of information…Tatsuaki Wada·Jul 21, 2026SaveLearn
Constraining Dipole Radiation with Multiband Gravitational Waves from Eccentric Binary Black HolesDipole-radiation-like deviations from general relativity are most prominent during the early inspiral of compact binaries, making space-ground multiband observations a potential probe of such…Han Wang, Lijing Shao·Jul 21, 2026SaveLearn