articleJournal of Cosmology and Astroparticle PhysicsJan 1, 2026HYBRID OA

Probing regular black holes with sub-Planckian curvature through periodic orbits and their gravitational wave radiation

SZSoroush ZareTZTao ZhuLMLuis M. NietoSLShuo LuHHHassan Hassanabadi

Universidad de Valladolid · University of Helsinki · +4 more institutions

Indexed incrossref

Abstract

Abstract Extreme mass-ratio inspirals (EMRIs) are among the key targets for future space-based gravitational wave detectors. The gravitational waveforms emitted by EMRIs are highly sensitive to the orbital dynamics of the small compact object, which in turn are determined by the geometry of the underlying spacetime. In this paper, we explore the detectability of regular black holes with sub-Planckian curvature, which can be interpreted as regularized versions of the Schwarzschild black hole (RSBH). To do so, we begin by analyzing the metric and geodesics, determining the effective potential, and investigating the marginally bound orbits and the innermost stable circular orbits for timelike particles. Our…

Citation impact

5
total citations
FWCI
60.05
Percentile
100%
References
153
Too recent for citation history.

Authors

5

Topics & keywords

Topics
Keywords
  • Gravitational wave
  • Schwarzschild radius
  • Angular momentum
  • Supermassive black hole
  • Circular orbit
  • Black hole (networking)
  • Curvature
  • Orbital motion
No related works found for this paper.

Funding