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Shadows of Kerr-like black holes in a modified gravity theory
- Source :
- JCAP 1903, 046 (2019)
- Publication Year :
- 2018
-
Abstract
- In this paper, the shadows cast by non-rotating and rotating modified gravity black holes are investigated. In addition to the black hole spin parameter $a$ and the inclination angle $\theta$ of observer, another parameter $\alpha$ measuring the deviation of gravitational constant from the Newton one is also found to affect the shape of the black hole shadow. The result shows that, for fixed values of $a/M$ and $\theta$, the size and perimeter of the shadows cast by the non-rotating and rotating black holes significantly increase with the parameter $\alpha$, while the distortions decrease with $\alpha$. Moreover, the energy emission rate of the black hole in high energy case is also investigated, and the result shows that the peak of the emission rate decreases with the parameter $\alpha$.<br />Comment: 14 pages, 8 figures
- Subjects :
- General Relativity and Quantum Cosmology
High Energy Physics - Theory
Subjects
Details
- Database :
- arXiv
- Journal :
- JCAP 1903, 046 (2019)
- Publication Type :
- Report
- Accession number :
- edsarx.1810.12767
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1088/1475-7516/2019/03/046