A study on the oscillatory instability of a hot two-temperature accretion disk including advection

Authors
Ding, SX Yang, LT Wand, DX
Citation
Sx. Ding et al., A study on the oscillatory instability of a hot two-temperature accretion disk including advection, CHIN ASTR A, 24(1), 2000, pp. 23-29
Citations number
18
Categorie Soggetti
Space Sciences
Journal title
CHINESE ASTRONOMY AND ASTROPHYSICS
ISSN journal
02751062 → ACNP
Volume
24
Issue
1
Year of publication
2000
Pages
23 - 29
Database
ISI
SICI code
0275-1062(200001/03)24:1<23:ASOTOI>2.0.ZU;2-T
Abstract
The radial-azimuthal instability of a hot two-temperature accretion disc wi th advection is analyzed. After obtaining the dispersion equation, we find that advection and viscous force have an influence on the stability of acou stic modes, but not on the stability of thermal and viscous modes. We also find azimuthal perturbations to affect the stability of all the modes. This model may be useful in explaining the quasi-periodic or periodic luminosit y variations in various astronomical objects.