Casadio-Fabbri-Mazzacurati Black Strings and Braneworld-induced Quasars Luminosity Corrections

Abstract

This paper aims to evince the corrections on the black string warped horizon in the braneworld paradigm, and their drastic physical consequences, as well as to provide subsequent applications in astrophysics. Our analysis concerning black holes on the brane departs from the Schwarzschild case, where the black string is unstable to large-scale perturbation. The cognizable measurability of the black string horizon corrections due to braneworld effects is investigated, as well as their applications in the variation of quasars luminosity. We delve into the case wherein two solutions of Einstein's equations proposed by Casadio, Fabbri, and Mazzacurati, regarding black hole metrics presenting a post-Newtonian parameter measured on the brane. In this scenario, it is possible to analyze purely the braneworld corrected variation in quasars luminosity, by an appropriate choice of the post-Newtonian parameter that precludes Hawking radiation on the brane: the variation in quasars luminosity is uniquely provided by pure braneworld effects, as the Hawking radiation on the brane is suppressed.

13 pages, 4 figures (to appear in Class. Quant. Grav.)

References in corpus (6)

• Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale
• BlackMax: A black-hole event generator with rotation, recoil, split branes and brane tension
• Black string corrections in variable tension braneworld scenarios
• Notes on the Two-brane Model with Variable Tension
• Exploring the bulk of tidal charged micro-black holes
• Schwarzschild generalized black hole horizon and the embedding space

Cited by in corpus (3)

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• Regular Bulk Solutions in Brane-worlds with Inhomogeneous Dust and Generalized Dark Radiation