Testing Kerr Black Hole Mimickers with Quasi-Periodic Oscillations from GRO J1655-40

Abstract

The measurements of quasi-periodic oscillations (QPOs) provide a quite powerful tool to test the nature of astrophysical black hole candidates in the strong gravitational field regime. In this paper, we use QPOs within the relativistic precession model to test a recently proposed family of rotating black hole mimickers, which reduce to the Kerr metric in a limiting case, and can represent traversable wormholes or regular black holes with one or two horizons, depending on the values of the parameters. In particular, assuming that the compact object of GRO J1655-40 is described by a rotating black hole mimicker, we perform a $\chi$-square analysis to fit the parameters of the mimicker with two sets of observed QPO frequencies from GRO J1655-40. Our results indicate that although the metric around the compact object of GRO J1655-40 is consistent with the Kerr metric, a regular black hole with one horizon is favored by the observation data of GRO J1655-40.

v1: 9 pages with 2 figures

References in corpus (16)

• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• Notes on non-singular models of black holes
• A novel family of rotating black hole mimickers
• Probing the space-time geometry around black hole candidates with the resonance models for high-frequency QPOs and comparison with the continuum-fitting method
• Strong gravitational lensing by rotating Simpson--Visser black holes
• Vaidya spacetimes, black-bounces, and traversable wormholes
• Gravitational lensing in a black-bounce traversable wormhole spacetime
• Testing Gravity with Quasi Periodic Oscillations from accreting Black Holes: the Case of Einstein-Dilaton-Gauss-Bonnet Theory
• Constraining alternatives to the Kerr black hole
• Epicyclic frequencies in static and spherically symmetric wormhole geometries
• On mass-constraints implied by the relativistic precession model of twin-peak quasi-periodic oscillations in Circinus X-1
• Looking for extra dimensions in the observed quasi-periodic oscillations of black holes
• Testing gravity of a disformal Kerr black hole in quadratic degenerate higher-order scalar-tensor theories by quasi-periodic oscillations
• Testing General Relativity using Quasi-Periodic Oscillations from X-ray Black Holes: XTE J1550-564 and GRO J1655-40
• Shadows and optical appearance of black bounces illuminated by a thin accretion disk
• Gravitational lensing by two photon spheres in a black-bounce spacetime in strong deflection limits

Cited by in corpus (4)

• Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A${}^{\ast }$
• Testing black hole mimickers with the Event Horizon Telescope image of Sagittarius A${}^{\ast }$
• Testing regular black holes with X-ray and GW data
• Testing Gravity with Black Hole X-Ray Data