Thin accretion disk around a rotating Kerr-like black hole in Einstein-bumblebee gravity model

Abstract

We study the accretion process in the thin disk around a rotating Kerr-like black hole in Einstein-bumblebee gravity model where Lorentz symmetry is spontaneously broken once a vector field acquires a vacuum expectation value. In the present paper we obtain the energy flux, the emission spectrum and accretion efficiency from the accretion disks around the rotating Kerr-like black hole, and we compare them to the general Kerr case. These significant features in the mass accretion process may provide a possibility to test whether the Lorentz symmetry is spontaneously broken or not in the Einstein-bumblebee gravity model by future astronomical observations.

arXiv comment14 figures. arXiv admin note: substantial text overlap with arXiv:1110.3462, arXiv:1106.5183; text overlap with arXiv:0909.1267 by other authors

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