Plasma instability at the inner edge of the accretion disk.

Details Plasma instability at the inner edge of the accretion disk. Plasma instability at the inner edge of the accretion disk.

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993japa...14..103t&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 14, no. 2, p. 103-114.

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Accretion Disks, Magnetohydrodynamic Stability, Astronomical Models, Computational Astrophysics, Interstellar Magnetic Fields, Kelvin-Helmholtz Instability, Perturbation Theory

Scientific paper

In this paper, the analytical and numerical results of the stability analysis of the accretion disk at the inner boundary is presented. Including the effect of finite conductivity in the disk dynamics, a simple calculation considering only the radial perturbation has been carried out. Within local approximation, it is concluded that the disk is stable to Kelvin-Helmholtz and resistive electromagnetic modes whereas the magnetosonic mode can destabilize the disk structure.

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