Další formáty:
BibTeX
LaTeX
RIS
@inproceedings{1360626,
author = {Kurfürst, Petr and Krtička, Jiří},
address = {San Francisco, USA},
booktitle = {Bright Emissaries: Be Stars as Messengers of Star-Disk Physics},
edition = {Volume 506},
editor = {Aaron Sigut, Carol Jones},
keywords = {large decretion disks critical point outer disk radius},
howpublished = {elektronická verze "online"},
language = {eng},
location = {San Francisco, USA},
isbn = {978-1-58381-896-1},
pages = {149-156},
publisher = {Astronomical Society of the Pacific},
title = {Hydrodynamical Modeling of Large Circumstellar Disks},
year = {2016}
}
TY - JOUR
ID - 1360626
AU - Kurfürst, Petr - Krtička, Jiří
PY - 2016
TI - Hydrodynamical Modeling of Large Circumstellar Disks
PB - Astronomical Society of the Pacific
CY - San Francisco, USA
SN - 9781583818961
KW - large decretion disks critical point outer disk radius
N2 - Direct centrifugal ejection from a critically or near-critically rotating surface forms a gaseous equatorial decretion disk. Anomalous viscosity provides the efficient mechanism for transporting the angular momentum outwards. The outer part of the disk can extend up to a very large distance from the parent star. We study the evolution of density, radial and azimuthal velocity, and angular momentum loss rate of equatorial decretion disks out to very distant regions. We investigate how the physical characteristics of the disk depend on the distribution of temperature and viscosity. We also study the magnetorotational instability, which is considered to be the origin of anomalous viscosity in outflowing disks. We use analytical calculations to study the stability of outflowing disks submerged to the magnetic field. At large radii the instability disappears in the region where the disk orbital velocity is roughly equal to the sound speed. Therefore, the disk sonic radius can be roughly considered as an outer disk radius.
ER -
KURFÜRST, Petr a Jiří KRTIČKA. Hydrodynamical Modeling of Large Circumstellar Disks. Online. In Aaron Sigut, Carol Jones. \textit{Bright Emissaries: Be Stars as Messengers of Star-Disk Physics}. Volume 506. San Francisco, USA: Astronomical Society of the Pacific, 2016, s.~149-156. ISBN~978-1-58381-896-1.
|
