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arXiv · 1103.0677

Resonant Excitation of Disk Oscillations in Deformed Disks V: Effects of Dissipative Process

Shoji Kato
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Abstract

It is suggested that a set of positive- and negative-energy oscillations can be resonantly excited in the inner region of deformed (warped or eccentric) relativistic disks. In this paper we examine how a dissipative process affects on this wave excitation process. The results show that when the resonant condition in frequency is roughly satisfied and thus the oscillations are excited, introduction of a dissipative process works so as to decrease the growth rate of the oscillations. When the frequency difference of the two oscillations deviates more than a certain amount from that required by resonant condition, however, the oscillations are excited by introduction of dissipative process. This excitation by dissipative process can be understood as a special example of the double-diffusive instability.

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Shoji Kato. 2011-03-03. Resonant Excitation of Disk Oscillations in Deformed Disks V: Effects of Dissipative Process. https://doi.org/10.1093/pasj%2F63.3.617

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