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Shadows of rotating Hayward-de Sitter black holes with astrometric observables

Submit Time: 2020-09-09
Author: Peng-Zhang He 1 ; Qi-Qi Fan 1 ; Hao-Ran Zhang 1 ; Jian-Bo Deng 1 ;
Institute: 1.兰州大学物理学院;

Abstracts

Motivated by recent work on rotating black hole shadow [Phys. Rev. D101, 084029 (2020)], we investigate the shadow behaviors of rotating Hayward-de Sitter black hole for static observers at a finite distance in terms of astronomical observables. This paper uses the newly introduced distortion parameter in [arXiv:2006.00685] to describe the shadow's shape quantitatively. We show that the spin parameter would distort shadows and the magnetic monopole charge would increase the degree of deformation. At the same time, the distortion could be relieved because of the cosmological constant and the distortion would increase with the distance from the black hole. Besides, the spin parameter, magnetic monopole charge and cosmological constant increase will cause the shadow to shrink.
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From: 贺鹏璋
DOI:10.12074/202009.00012
Recommended references: Peng-Zhang He,Qi-Qi Fan,Hao-Ran Zhang,Jian-Bo Deng.(2020).Shadows of rotating Hayward-de Sitter black holes with astrometric observables.[ChinaXiv:202009.00012] (Click&Copy)
Version History
[V2] 2020-09-09 05:54:14 chinaXiv:202009.00012V2 Download
[V1] 2020-09-05 22:29:25 chinaXiv:202009.00012v1(View This Version) Download
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