The pulsational instability of nonisothermal magnetized accretion disk with self-gravity in the transition zone.

Details The pulsational instability of nonisothermal magnetized accretion disk with self-gravity in the transition zone. The pulsational instability of nonisothermal magnetized accretion disk with self-gravity in the transition zone.

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cotph..31..453l&link_type=abstract

Commun. Theor. Phys., Vol. 31, No. 3, p. 453 - 458

Physics

Accretion Disks: Instabilities

Scientific paper

By analyzing the fifth-order dispersion relation, the influence of coupled magnetic field and self-gravity on the pulsational instability of a gas pressure dominated accretion disk is investigated. The main results are that the viscous modes become more stable with the increase of self-gravity, magnetized field and viscosity, while they enhance the instabilities of acoustic modes. The effect of self-gravity to the instability is much greater than that of magnetic field in transition zone of the accretion disk. Especially, the self-gravity affects the thermal-modes and acoustic modes strongly. Finally the authors discuss their results.

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