Open AccessElectric charge and magnetic flux on rotating black holes in a force‐free magnetosphere
Author(s) -
Lee Hyun Kyu,
Lee Chul H.,
Van Putten Maurice H. P. M.
Publication year - 2001
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2001.04401.x
Subject(s) - physics , magnetar , magnetic flux , electric field , black hole (networking) , electric flux , electric charge , charge (physics) , charged black hole , quantum electrodynamics , flux (metallurgy) , rotating black hole , magnetosphere , magnetic field , astrophysics , condensed matter physics , extremal black hole , pulsar , quantum mechanics , optical field , computer network , routing protocol , routing (electronic design automation) , accretion (finance) , computer science , metallurgy , link state routing protocol , materials science
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∼10 15 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.