Plasma instability at the inner edge of the accretion disk— II |
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| Authors: | S C Tripathy C B Dwivedi A C Das A R Prasanna |
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| Institution: | (1) Udaipur Solar Observatory, Physical Research Laboratory, 11, Vidya Marg, 313001 Udaipur;(2) Institute of Advanced Study in Science and Technology, Khanapara, 781022 Guwahati;(3) Physical Research Laboratory, Navrangpura, 380 009 Ahmedabad |
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| Abstract: | A two-dimensional instability analysis for a magneto-keplerian disk flow around a compact object is presented here. Using
the eigenvalue technique, linearly coupled perturbed equations have been numerically solved within the local approximation.
It is concluded that Kelvin-Helmholtz, magnetosonic (fast and slow) and resistive electromagnetic modes exist. However, only
the magnetosonic mode can destabilise the disk structure. Further, we discuss the properties of different modes as a function
of disk parameters and plot the eigenmode structures for different physical quantities. |
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| Keywords: | Accretion disks hydromagnetics instability |
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