Dynamical stability of two-dimensional accretion flows: An analytic study

Omri Gat*, Mario Livio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


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. accretion, accretion disks instabilities.

Original languageAmerican English
Pages (from-to)542-548
Number of pages7
JournalAstrophysical Journal
Issue number2
StatePublished - 1992
Externally publishedYes


Dive into the research topics of 'Dynamical stability of two-dimensional accretion flows: An analytic study'. Together they form a unique fingerprint.

Cite this