Sonic-point instability with a new revised viscosity and isothermal accretion disc

Details Sonic-point instability with a new revised viscosity and isothermal accretion disc Sonic-point instability with a new revised viscosity and isothermal accretion disc

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.279..669y&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 279, Issue 2, pp. 669-672.

Astronomy and Astrophysics

Astronomy

Accretion, Accretion Discs, Instabilities

Scientific paper

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.

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