Surface properties of Kerr-Newman black holes

Details Surface properties of Kerr-Newman black holes Surface properties of Kerr-Newman black holes

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981amjph..49..720d&link_type=abstract

American Journal of Physics, Volume 49, Issue 8, pp. 720-724 (1981).

Physics

4

Black Holes, Surface Features, Relativity And Gravitation

Scientific paper

The magnitude of the proper acceleration of a stationary observer in the exterior Kerr-Newman geometry is used to determine an elementary property of the event horizon of a rotating charged black hole and to give a simple physical interpretation of its ''surface gravity'' as used in descriptions of the Hawking radiation. The global (nonlocal) nature of a black hole event horizon is also simply illustrated. The Kerr-Newman metric and the calculations based on it are presented in SI equations for the benefit of the many students and teachers in physics who rarely use any other system. To minimize the mathematical tools required we carry out the calculations in the well-understood Boyer-Lindquist coordinates.

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