Bhattacharjee, Jayanta K. ; Ray, Arnab K. (2007) Secular Instability in Quasi‐viscous Disk Accretion The Astrophysical Journal, 668 (1). pp. 409-416. ISSN 0004-637X
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Official URL: http://doi.org/10.1086/521042
Related URL: http://dx.doi.org/10.1086/521042
Abstract
A first-order correction in the α-viscosity parameter of Shakura & Sunyaev has been introduced in the standard inviscid and thin accretion disk. A linearized time-dependent perturbative study of the stationary solutions of this "quasi-viscous" disk reveals the development of a secular instability on large spatial scales. This qualitative feature is equally manifest for two different types of perturbative treatment: a standing wave on subsonic scales, as well as a radially propagating wave. The stability of the flow is restored when the viscosity disappears.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Astronomical Society. |
| ID Code: | 133908 |
| Deposited On: | 02 Jan 2023 08:23 |
| Last Modified: | 02 Jan 2023 08:23 |
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