Astronomy and Astrophysics – Astronomy
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ppcn.conf..157t&link_type=abstract
In ESA, Fourth International Toki Conference on Plasma Physics and Controlled Nuclear Fusion p 157-160 (SEE N94-22624 05-75)
Astronomy and Astrophysics
Astronomy
Black Holes (Astronomy), Relativistic Plasmas, Stellar Magnetospheres, Magnetohydrodynamic Flow, Magnetohydrodynamics, Plasma Jets, Plasma Waves, Stellar Winds
Scientific paper
Black hole driven magnetized winds in a stationary and axisymmetric magnestosphere are studied. Ingoing and outgoing winds are injected from a particle creation region around the black hole. This region is assumed to be a thin shell with a large poloidal current density. By using Ohm's law, the production of the mass flux and the heat flow is evaluated as a process of the Joule dissipation. A review of the well known results for the axisymmetric, stationary ideal magnetohydrodynamic system is given. The general relativistic effect becomes very important for ingoing winds near the black hole. The total energy carried by ingoing magnetized winds is found to be negative. This is a mechanism of energy extraction from a rotating hole. The particle creation region is considered to see the pair production of ingoing winds with negative energy and outgoing winds with positive energy.
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