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| Paper: |
Dynamics of Circumstellar Disks in Be Star Binaries |
| Volume: |
464, Circumstellar Dynamics at High Resolution |
| Page: |
177 |
| Authors: |
Okazaki, A. T. |
| Abstract: |
In isolated Be stars, the circumstellar disk is affected by the interactions
with the central star via the irradiation, the stellar wind, and the mass
injection into the disk. These interactions, together with the viscous
interaction inside the disk, basically determine the disk structure and
evolution. In Be stars in binaries, the presence of the companion adds
significant complications to the dynamics of the circumstellar disk. For
instance, the tidal torque by the companion truncates the circumstellar disk
in systems with low to moderate orbital eccentricity. The tidal torque can
also give rise to the disk warping and/or precession. If the companion is a
pulsar with a relativistic wind, as in some γ-ray binaries with Be
stars, the circumstellar disk can strongly interact with the pulsar wind and
become a site of high energy emission. Since observed features are often very
complicated, developing a tool to calculate observables from simulation data
is desirable. |
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