Electric charge and magnetic flux on rotating black holes in a force-free magnetosphere |
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| Authors: | Hyun KyuLee Chul HLee Maurice H P Mvan Putten |
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| Institution: | ;1Department of Physics, Hanyang University, Seoul 133-791, Korea;2Department of Physics and Astronomy, State University of New York, Stony Brook, NY 11794-3800, USA;3Department of Mathematics, MIT 2-378, Cambridge, MA 02139, USA |
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| Abstract: | The electric charge on rotating black holes is calculated to be ∼ BJ in the force-free configuration of Ghosh, with a horizon flux of ∼ BM 2. This charge is gravitationally weak for B ∼1015 G , so that the Kerr metric applies. Being similar to the electric charge of a magnetar, both electric charge and magnetic flux should be, in sign and order of magnitude, continuous during stellar collapse into a black hole. Extraction of the rotational energy from newly formed black holes may proceed by interaction with the magnetic field. |
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| Keywords: | black hole physics magnetic fields |
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