2021
DOI: 10.48550/arxiv.2105.06636
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Looking for extra dimensions in the observed quasi-periodic oscillations of black holes

Indrani Banerjee,
Sumanta Chakraborty,
Soumitra SenGupta

Abstract: Quasi-periodic oscillations, often present in the power density spectrum of accretion disk around black holes, are useful probes for the understanding of gravitational interaction in the near-horizon regime of black holes. Since the presence of an extra spatial dimension modifies the near horizon geometry of black holes, it is expected that the study of these quasi-periodic oscillations may shed some light on the possible existence of these extra dimensions. Intriguingly, most of the extra dimensional models, … Show more

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Cited by 7 publications
(9 citation statements)
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References 111 publications
(180 reference statements)
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“…This is again in striking contrast to the case of a Kerr-Newman BH, for which the value of the dimensionless rotation parameter (a/M ) is strictly less than unity. Furthermore, negative value of the tidal charge has implications in various other astrophysical scenarios, e.g., -(a) the tidal love number of a braneworld BH is non-zero [64], (b) braneworld BHs cast a bigger shadow and is consistent with the shadow measurement of the supermassive BH M87* [39], (c) continuum spectrum as well as quasi-periodic oscillations from accretion disks favours the presence of extra dimensions [73,78]. Motivated by these results, we concentrate, in this work, on the implications of a negative tidal charge parameter on the QNMs.…”
Section: Brief Review Of Rotating Braneworld Black Holementioning
confidence: 95%
“…This is again in striking contrast to the case of a Kerr-Newman BH, for which the value of the dimensionless rotation parameter (a/M ) is strictly less than unity. Furthermore, negative value of the tidal charge has implications in various other astrophysical scenarios, e.g., -(a) the tidal love number of a braneworld BH is non-zero [64], (b) braneworld BHs cast a bigger shadow and is consistent with the shadow measurement of the supermassive BH M87* [39], (c) continuum spectrum as well as quasi-periodic oscillations from accretion disks favours the presence of extra dimensions [73,78]. Motivated by these results, we concentrate, in this work, on the implications of a negative tidal charge parameter on the QNMs.…”
Section: Brief Review Of Rotating Braneworld Black Holementioning
confidence: 95%
“…In this section, we shall discuss the opposite scenario where the background spacetime inherits quantum corrections, while the membrane remains classical. Such a scenario naturally arises in the context of braneworld BHs [38,53] whose various observational signatures have been studied in [54][55][56][57][58][59][60]. We shall first provide the spacetime geometry of the braneworld BH, and then discuss the quantum origin of such a solution.…”
Section: Membrane Paradigm For Bhs On the Branementioning
confidence: 99%
“…Assuming a small perturbation around a circular equatorial orbit [38][39][40][41][42][43][44][45][46][47][48][49][50][51], i.e.,…”
Section: Constraint On Parameters Of a Rotating Black Hole In Einstei...mentioning
confidence: 99%
“…Thus, the low-frequency quasi-periodic signal is assumed to be emitted at the same orbit of the test particle where the twin higher frequencies signals are generated. Together with the observation data of GRO J1655-40 [32], the constraint on the black hole parameters in various theories of gravity have been performed by quasi-periodic oscillations within the relativistic precession model [38][39][40][41][42][43][44][45][46][47][48][49][50][51]. The main purpose of this paper is to constrain the Lorentz symmetry breaking parameter for a rotating black hole in Einstein-bumblebee theory of gravity by using of quasi-periodic oscillations with the observation data of GRO J1655-40 [32].…”
Section: Introductionmentioning
confidence: 99%