Formation of Jets of Protostellar Thin Disks

Author: Dimitri Javrishvili
Keywords: Astrophysical Jets, Young Stellar Objects
Annotation:

Self-similar solutions for the astrophysical disk-jet systems are studied based on the generalized hydrodynamic model. General as well the Protostellar Disk-Jet solutions are constructed. Latter objects occur at early stages of star formation and are characterized by local accretion disks and well collimated jets with low ionization. Effect of turbulence is studied using anomalous viscosity alpha model and the effect of the temperature radial stratification by radial dependence of the sound speed. Analytic solution shows that the growth of stratification parameter leads to the increase of the mass outflow in the jet. Self-similar solutions predict narrower less massive jets from slowly accreting low density disks compared to rapid accretion strongly stratified disk models. Theoretical predictions based on realistic parameters are in agreement with the lower bounds of jet observational velocities.

Lecture files:

MSc Javrishvili 2013_Presentation [ka]