Magnetohydrodynamic Wave Propagation in the "Ionosphere" of the Central Black Hole in an Active Galactic Nucleus

Details Magnetohydrodynamic Wave Propagation in the "Ionosphere" of the Central Black Hole in an Active Galactic Nucleus Magnetohydrodynamic Wave Propagation in the "Ionosphere" of the Central Black Hole in an Active Galactic Nucleus

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pkas....7...71p&link_type=abstract

Publications of the Korean Astronomical Society, vol.7, no.1, p.71-77

Astronomy and Astrophysics

Astronomy

1

Scientific paper

An axisymmetric, stationary electrodynamic model of the central engine of an active galactic nucleus has been well formulated by Macdonald and Thorne. In this model the relativistic region around the central black hole must be filled with highly conducting plasma and the equations of magnetohydrodynamics are then satisfied. In this paper we analyze magnetohydrodynamic wave propagation in this region. We find that there are three distinct types of waves - The Alfven wave and two magnetosonic waves. The wave equations turn out to be not very different from those in nonrelativistic case except they are redshifted.

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