Structure and stability of a thin protostar disk with anomalous viscosity

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 for...

Full description

Saved in:
Bibliographic Details
Published in:Astrophysics and space science 2011-10, Vol.335 (2), p.469-474
Main Authors: Lin, Fu-Jun, Liu, San-Qiu
Format: Article
Language:English
Subjects:
Accretion disks
Astrobiology
Astronomy
Astrophysics
Astrophysics and Astroparticles
Cosmology
Magnetic fields
Observations and Techniques
Original Article
Physics
Physics and Astronomy
Protostars
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Viscosity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0004-640X
1572-946X
DOI:10.1007/s10509-011-0777-8