Excitation factors and exceptional points of Kerr--Newman quasinormal modesWe study excitation factors and investigate exceptional points (EPs) of Kerr--Newman quasinormal modes using the exact separated gravitoelectromagnetic equations. At fixed charge, the magnitudes of…Jun-Kun Zhao, Tieguang Zi·Nov 3, 2026SaveLearn
Gravitational-wave lensing beyond the diffraction integral: proper-time methods and the bound lensGravitational waves (GWs) can have wavelengths comparable to the Schwarzschild radius of their lenses, and detectors record their phase, so lensing requires wave optics. Its standard tool, the…Ginevra Braga, Raul Jimenez·Nov 3, 2026SaveLearn
Scale-Dependent Weak-Field Dynamics in Horndeski Theory: Galaxy Rotation Curves and Turnaround ScalesIn this work, the weak-field dynamics of a gravitational-wave compatible subclass of Horndeski gravity is investigated on galactic and intergalactic scales. The analysis is performed within the…Hatice Özer·Nov 3, 2026SaveLearn
Mixed-Order Parity-Violating Corrections to Rotating Black Holes in Combined Scalar Gauss-Bonnet and Dynamical Chern-Simons GravityWe construct the leading mixed-order O(ζ GBζ CS) deformation of rotating black holes in a combined scalar Gauss-Bonnet and dynamical Chern-Simons effective theory, the sector…Abhishek Rout, Brett Altschul·Nov 3, 2026SaveLearn
On the Motion of a Point Electric Charge in the Field of Wu-Yang Monopoles in Bertotti-Robinson SpacetimesWe study the SU(2) Einstein-Yang-Mills system with non-minimal RF2-type couplings of Yang-Mills fields to curvature, formulated with exterior differential forms and a Lagrange-multiplier…Tekin Dereli, Yorgo Senikoglu·Nov 3, 2026SaveLearn
Particle dynamics in rotating charged Bumblebee black holes: An analytical correspondence with Kerr-NewmanIn this paper, we establish an analytical correspondence between the equatorial dynamics of spinless and spinning test particles in a slowly rotating charged Einstein--Bumblebee black hole spacetime…Deyou Chen, Chuang Yang·Nov 3, 2026SaveLearn
A Unified AI Framework for Rapid and Accurate Waveform Generation of Compact Binary CoalescencesThe astrophysical discovery potential of future gravitational wave detectors will hinge on accurate and rapid waveform generation. Third generation detectors are expected to observe many long…Mengfei Sun, Jin Li, Yuanhong Zhong et al.·Nov 3, 2026SaveLearn
Final state of superradiant instability in Einstein-Maxwell-dilaton black holeThis article examines the instability of charged black holes, using Einstein-Maxwell-dilaton theory and a massless charged scalar field. Our study demonstrates that these black holes become unstable…Afsaneh Rahmani, Samaneh Oghbaiee·Nov 3, 2026SaveLearn
On Isaacson's Procedure in f(R)-Gravity with Second Order Metric PerturbationsIn the recent paper arXiv:2504.02253 we generalized classical Isaacson's procedure for describing back-reaction of the averaged energy-momentum for high frequency gravitational waves to f(R)…Petr V. Tretyakov, Alexander N. Petrov·Nov 3, 2026SaveLearn
On mass inflation and late-time divergences in limiting-curvature regular black holesMass inflation in non-extremal regular black holes with a non-linear dependence of the Misner-Sharp mass M on the asymptotic mass m>0 may be a transient phenomenon followed by a model-dependent…Johanna Borissova·Nov 3, 2026SaveLearn
Late-time echoes from planar wave-packet scattering by an ultracompact starWe simulate the propagation and scattering of an incident plane scalar wave in the spacetime of an ultracompact, horizonless constant-density star using a time-domain multipole mode-sum method. By…Shanshan Deng, Jian-hua He·Nov 3, 2026SaveLearn
Single-horizon regular black holes and the fate of the inner-horizon instabilityRegular black holes (RBHs) are often constructed with a regular point-like center and two horizons, including an inner Cauchy horizon susceptible to mass inflation. We show that a two-horizon…Chen Lan, Hao Yang, Maxim Khlopov et al.·Nov 3, 2026SaveLearn
Imaginary Time as a Complex Representation of RelativityWe develop a systematic complex representation of Lorentzian relativity based on the imaginary temporal coordinate X0=ict. Rather than treating this substitution as a Wick rotation to Euclidean…William McConville·Nov 3, 2026SaveLearn
Multimessenger astrophysics drives the case for an Australian Gravitational-Wave observatoryThe next generation of an international network of gravitational-wave observatories is now in the advanced planning stages. With Australia's substantial history of contributions in this field,…Fiona H. Panther, Paul D. Lasky, Nikhil Sarin·Nov 3, 2026SaveLearn
Binary black hole mergers in massive Einstein-scalar-Gauss-Bonnet gravityWe study fully non-linear binary black hole mergers in massive Einstein-scalar-Gauss-Bonnet (EsGB) gravity with a linear Gauss-Bonnet coupling function. In the absence of a well-developed initial…Harry L. H. Shum, Llibert Aresté Saló, Miguel Bezares et al.·Nov 2, 2026SaveLearn
Noisy pipelines II: Non-parametric Noise Inference for LISAThe Laser Interferometer Space Antenna (LISA) is expected to observe gravitational-wave signals from massive black hole binaries, extreme mass ratio inspirals, and more. Despite the significant…Charlie Hoy, Joseph Bayley, Ollie Burke et al.·Nov 2, 2026SaveLearn
Quasi-Normal Modes of Covariant Loop Quantum Black HolesWe investigate the quasinormal modes (QNMs) and time-domain response of a massless, minimally coupled test scalar field on static, spherically symmetric covariant loop quantum black hole (cLQBH)…Chao Zhang, Sushant G. Ghosh, Anzhong Wang·Nov 2, 2026SaveLearn
Kerr metric perturbations for second-order self-force theoryWe present a calculation of the first-order metric perturbation arising from a point mass moving on a circular, equatorial orbit in Kerr spacetime. The metric perturbation is specifically aimed at…Benjamin Leather, Samuel D. Upton, Patrick Bourg et al.·Nov 2, 2026SaveLearn
Multi-domain spectral method for Kerr spacetimes: a hyperboloidal Teukolsky m-mode solver for self-force computationsWe solve the frequency-domain, m-mode Teukolsky equation for the spin-weight s=-2 Weyl scalar ψ4 sourced by a point mass on a circular, equatorial orbit around a Kerr black hole. The equation…Brad Cownden, Rodrigo Panosso Macedo, Christiana Pantelidou et al.·Nov 2, 2026SaveLearn
Electrically charged black holes with electroweak hairWe construct electrically charged black holes in Einstein's gravity coupled to the bosonic sector of the electroweak theory, focusing on static, spherically symmetric and asymptotically flat…Etevaldo dos Santos Costa Filho·Nov 2, 2026SaveLearn
Bouncing and QNM convergence in KerrWe show that the convergence region of the QNM representation of the retarded Green's function of the Kerr spacetime is set by complex-time bouncing singularities, as in our previous work for the…Paolo Arnaudo, Benjamin Withers·Nov 2, 2026SaveLearn
Nonexistence of Multiple Black Holes in Stationary Analytic Vacuum spacetimesWe prove the nonexistence of non-rotating and degenerate horizon components in the stationary, asymptotically flat, I+-regular, analytic vacuum spacetime. This result rules out the final case in…Yishen Huang, Junbin Li, Xi-Ping Zhu·Nov 2, 2026SaveLearn
Effective Optical Geometry and Holographic Phase Structure of a Magnetic AdS Black HoleWe study circular null orbits, thermodynamic topology, and the holographic thermodynamic description of a four-dimensional magnetically charged AdS black hole in nonlinear electrodynamics. The…Mohammad Ali S. Afshar, Mohammad Reza Alipour, Saeed Noori Gashti et al.·Nov 2, 2026SaveLearn
Reference-renormalized Jacobi primitives for finite-distance massive-particle deflectionWe develop a reference-renormalized Jacobi-primitive Gauss-Bonnet formalism for finite-distance weak deflection of massive particles in static, spherically symmetric spacetimes. The construction uses…Reggie C. Pantig·Nov 2, 2026SaveLearn
Gauge-invariant non-universal scalar couplings in teleparallel gravityWe develop a gauge-invariant teleparallel framework in which the universality of the gravitational coupling is relaxed for a scalar field, while the gravitational sector retains the form of the…Giovanni Otalora, Rudranil Roy·Nov 2, 2026SaveLearn