Journal
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS
Volume 128, Issue 5, Pages 720-726Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063776119040010
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Funding
- Russian Foundation for Basic Research [16-02-00682]
- program for development of the Moscow State University MSU Leading Scientific Schools (physics of stars, relativistic compact objects, and galaxies)
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A simple phenomenological extension of the black hole solution with tidal charge is proposed. Empirical data on the Sgr A* black hole is consistent with the suggested metric which serves as a generalization of the Reissner-Nordstrom one. Such a generalization includes the leading effects beyond general relativity; so, the discussed metric can explain wider range of gravitational effects. We discuss physical features of an object described by the proposed metric, namely, the size of its shadow and the innermost stable circular orbit radius.
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