Sonic-point instability with a new revised viscosity and isothermal accretion disc
Abstract
The stability of the sonic point in an isothermal accretion disc is examined for the case in which a new revised viscosity is adopted. From this viscosity, it follows that at a sonic point T_rrho=-2nuSigmaOmega/(1+2C_stau/r). The results show that the sonic point is a saddle and stable against small amplitude perturbations. Finally, we discuss these results.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- March 1996
- DOI:
- 10.1093/mnras/279.2.669
- Bibcode:
- 1996MNRAS.279..669Y
- Keywords:
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- ACCRETION;
- ACCRETION DISCS;
- INSTABILITIES