Title
Exact Kerr-like solution and its shadow in a gravity model with spontaneous Lorentz symmetry breaking
Date Issued
01 March 2020
Access level
open access
Resource Type
journal article
Author(s)
Ding C.
Liu C.
Cavalcante A.
Universidade Federal do Maranhão
Publisher(s)
Springer
Abstract
We obtain an exact Kerr-like black hole solution by solving the corresponding gravitational field equations in Einstein-bumblebee gravity model where Lorentz symmetry is spontaneously broken once a vector field acquires a vacuum expectation value. Results are presented for the purely radial Lorentz symmetry breaking. In order to study the effects of this breaking, we consider the black hole shadow and find that the radial of the unstable spherical orbit on the equatorial plane rc decreases with the Lorentz breaking constant ℓ> 0 , and increases with ℓ< 0. These shifts are similar to those of Einstein-aether black hole. The effect of the LV parameter on the black hole shadow is that it accelerates the appearance of shadow distortion, and could be detected by the new generation of gravitational antennas.
Volume
80
Issue
3
Language
English
OCDE Knowledge area
Física atómica, molecular y química Física atómica, molecular y química
Scopus EID
2-s2.0-85080125743
Source
European Physical Journal C
ISSN of the container
14346044
Sponsor(s)
The authors thank the National Natural Science Foundation (NNSFC) of China (Grant No. 11247013), Hunan Provincial Natural Science Foundation of China (Grant No. 2015JJ2085), the Scientific Research Fund of the Hunan Provincial Education Department Under No. 19A257, CAPES, CNPq, and FAPEMA (Brazilian agencies) for financial support. The authors thank the National Natural Science Foundation (NNSFC) of China (Grant No. 11247013), Hunan Provincial Natural Science Foundation of China (Grant No. 2015JJ2085), the Scientific Research Fund of the Hunan Provincial Education Department Under No. 19A257, CAPES, CNPq, and FAPEMA (Brazilian agencies) for financial support. Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão
Sources of information: Directorio de Producción Científica Scopus