Next Article in Journal
Constraints on Lorentz Invariance Violation with Multiwavelength Polarized Astrophysical Sources
Next Article in Special Issue
Effects of 2HDM in Electroweak Phase Transition
Previous Article in Journal
Polarimetric Properties of Blazars Caught by the WEBT
Previous Article in Special Issue
Astronomical Seeing at Maidanak Observatory during the Year 2018
Article

Ergosphere, Photon Region Structure, and the Shadow of a Rotating Charged Weyl Black Hole

1
Instituto de Física y Astronomía, Universidad de Valparaíso, Avenida Gran Bretaña 1111, Valparaíso 2340000, Chile
2
Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Avenida Ejército Libertador 441, Casilla 298-V, Santiago 8370109, Chile
*
Author to whom correspondence should be addressed.
Academic Editor: Saurya Das
Galaxies 2021, 9(2), 43; https://doi.org/10.3390/galaxies9020043
Received: 18 May 2021 / Revised: 13 June 2021 / Accepted: 15 June 2021 / Published: 18 June 2021
In this paper, we explore the photon region and the shadow of the rotating counterpart of a static charged Weyl black hole, which has been previously discussed according to null and time-like geodesics. The rotating black hole shows strong sensitivity to the electric charge and the spin parameter, and its shadow changes from being oblate to being sharp by increasing in the spin parameter. Comparing the calculated vertical angular diameter of the shadow with that of M87*, we found that the latter may possess about 1036 protons as its source of electric charge, if it is a rotating charged Weyl black hole. A complete derivation of the ergosphere and the static limit is also presented. View Full-Text
Keywords: Weyl gravity; black hole shadow; ergosphere Weyl gravity; black hole shadow; ergosphere
Show Figures

Figure 1

MDPI and ACS Style

Fathi, M.; Olivares, M.; Villanueva, J.R. Ergosphere, Photon Region Structure, and the Shadow of a Rotating Charged Weyl Black Hole. Galaxies 2021, 9, 43. https://doi.org/10.3390/galaxies9020043

AMA Style

Fathi M, Olivares M, Villanueva JR. Ergosphere, Photon Region Structure, and the Shadow of a Rotating Charged Weyl Black Hole. Galaxies. 2021; 9(2):43. https://doi.org/10.3390/galaxies9020043

Chicago/Turabian Style

Fathi, Mohsen, Marco Olivares, and José R. Villanueva 2021. "Ergosphere, Photon Region Structure, and the Shadow of a Rotating Charged Weyl Black Hole" Galaxies 9, no. 2: 43. https://doi.org/10.3390/galaxies9020043

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop