Structure and stability of a thin protostar disk with anomalous viscosity

Details Structure and stability of a thin protostar disk with anomalous viscosity Structure and stability of a thin protostar disk with anomalous viscosity

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ap%26ss.335..469l&link_type=abstract

Astrophysics and Space Science, Volume 335, Issue 2, pp.469-474

Astronomy and Astrophysics

Astrophysics

Structure, Stability, Anomalous Viscosity, Accretion Disk

Scientific paper

The structure of a thin protostar disk has been investigated in the frame of anomalous magnetic viscosity prescription. The numerical results reveal that, the dynamical behavior of the disk with anomalous magnetic viscosity model is different from one with the well-known α-prescription, and the former can reveal the real behavior of the disk. The linear stability of this disk has also been examined under the short wavelength approximation ( kr≫1). It shows that the I-mode, O-mode and thermal mode are unstable in the inner and outer region of the thin protostar disk, on the contrary, viscous mode is stable. The growth time scale for these instabilities in the outer region are shorter than ones in the inner.

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