DYNAMIC STABILITY OF 2-DIMENSIONAL ACCRETION FLOWS - AN ANALYTIC STUDY

被引：8

作者：

GAT, O ^{[1
]}

LIVIO, M ^{[1
]}

机构：

[1] TECHNION ISRAEL INST TECHNOL,DEPT PHYS,HAIFA,ISRAEL

来源：

ASTROPHYSICAL JOURNAL | 1992年 / 396卷 / 02期

关键词：

ACCRETION; ACCRETION DISKS; INSTABILITIES;

D O I：

10.1086/171739

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We solve the eigenvalue problem for nonaxisymmetric normal modes (the "Papaloizou-Pringle" instability) in a two-dimensional shearing flow with steady accretion. We use asymptotic techniques to derive (analytically) explicit expressions for eigenfunctions of the unstable modes, and their growth rate. These expressions allow us to demonstrate the stabilizing effect of transonic accretion and to identify the physical cause for this stabilization.

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页码：542 / 548

页数：7

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