The axisymmetric pulsational instability in weakly magnetized accretion disks with viscosity.

Details The axisymmetric pulsational instability in weakly magnetized accretion disks with viscosity. The axisymmetric pulsational instability in weakly magnetized accretion disks with viscosity.

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997acasn..38...48w&link_type=abstract

Acta Astron. Sin., Vol. 38, No. 1, p. 48 - 55

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Accretion Disks: Magnetohydrodynamics, Accretion Disks: Instabilities

Scientific paper

A model of weakly magnetized, isothermal accretion disks with viscosity is investigated. It is shown that there exist four modes of axisymmetric oscillations in the disks, arising from the axisymmetric perturbations. Two of these modes are always pulsationally unstable, and the viscosity and the magnetic fields act as factors of instability. The other two modes are always stable, and the viscosity and the magnetic fields are stabilizing factors.

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