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RISBeta Viscosit Prescription in Self-Gravitating Disks
Duschl et al. (2000) have shown that the standard model for geometrically
thin accretion disks (®-disks) leads to inconsistency if self-gravity play a role. This
problem arise from parametrization of viscosity ...
Formation of small-scale condensations in the molecular clouds via thermal instability
A systematic study of the linear thermal instability of a self-gravitating magnetic molecular cloud is carried out for the case when the unperturbed background is subject to local expansion or contraction. We consider the ...
Gravitational instability of filamentary molecular clouds, including ambipolar diffusion
The gravitational instability of a filamentary molecular cloud in non-ideal magnetohydrodynamics
is investigated. The filament is assumed to be in hydrostatic equilibrium. We add the
effect of ambipolar ...
Gravitational instability of filamentary molecular clouds, including ambipolar diffusion; non-isothermal filament
Recent observations of the filamentary molecular clouds show that their properties deviate from the isothermal equation of state. Theoretical investigations proposed that the logatropic and the polytropic equations of state ...