Next Article in Journal
Selected Topics in Numerical Methods for Cosmology
Next Article in Special Issue
Nonlocal Gravitomagnetism
Previous Article in Journal / Special Issue
Rotation Sensing Lasers in General Relativity: Some Technical Notes and Current Advances
Open AccessArticle

Kerr Black Holes within a Modified Theory of Gravity

1
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad de México 04513, Mexico
2
Frankfurt Institute for Advanced Studies, J.W. von Goethe University, 60323 Hessen, Germany
3
Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
*
Author to whom correspondence should be addressed.
Universe 2019, 5(9), 191; https://doi.org/10.3390/universe5090191
Received: 6 July 2019 / Revised: 16 August 2019 / Accepted: 24 August 2019 / Published: 28 August 2019
(This article belongs to the Special Issue Rotation Effects in Relativity)
The Kerr black hole is studied within a modified theory of gravity, which adds the effects of vacuum fluctuations near a black hole. These vacuum fluctuations are treated as a dark energy. A parameter is introduced to account for these fluctuations. It is zero for the standard theory and acquires a maximal value, just before there would be no event horizon. The existence of an event horizon not only depends on the value of this parameter, but also on the spin of the black hole. In addition, we study the existence of a light-ring. We also elaborate on the relation of the appearance and vanishing of the event horizon and light-ring to phase transitions. View Full-Text
Keywords: rotation in alternative theories of gravity; rotation in relativity; rotating sources rotation in alternative theories of gravity; rotation in relativity; rotating sources
Show Figures

Figure 1

MDPI and ACS Style

Hess, P.O.; López-Moreno, E. Kerr Black Holes within a Modified Theory of Gravity. Universe 2019, 5, 191.

Show more citation formats Show less citations formats
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