Anti-de Sitter curvature radius constrained by quasars in brane-world scenarios

Abstract

This paper is intended to investigate the luminosity due to accretion of gas in supermassive black holes (SMBHs) in the center of quasars, using a brane-world scenario naturally endowed with extra dimensions, whereon theories formulated introduce corrections in the field equations at high energies. SMBHs possess the necessary highly energetic environment for the introduction of these corrections, which are shown to produce small deviations in all SMBH properties and, consequentely, corrections in the accretion theory that supports quasars radiative processes. The radiative flux observed from quasars indicates these deviations, from which the magnitude of the AdS${}_5$ bulk curvature radius, and consequently the extra dimension compactification radius is estimated.

11 pages, RevTeX, Eq.(2) and (3) expanded, and comments thereon updated

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