Winds from Disks
نویسندگان
چکیده
منابع مشابه
Radiation driven winds from luminous accretion disks
We study the two-dimensional, time-dependent hydrodynamics of radiation-driven winds from luminous accretion disks in which the radiation force is mediated primarily by spectral lines. We assume the disk is flat, Keplerian, geometrically thin, and optically thick, radiating as an ensemble of blackbodies according to the α-disk prescription. The effect of a radiant central star is included both ...
متن کاملMagnetohydrodynamic Jets and Winds from Accretion Disks
The theory of magnetically accelerated outflows and jets from accretion disks is reviewed at an introductory level, with special attention to problem areas like the launching conditions of the flow at the disk surface, stability of the magnetic field, and collimation mechanisms. This text will appear in R.A.M.J. Wijers, M.B. Davies and C.A. Tout, eds., Physical processes in Binary Stars, Kluwer...
متن کاملCollapsar Disks and Winds
Winds blown from collapsar accretion disks may produce observable stellar explosions independent of any GRB-(and afterglow)-producing jets which may be simultaneously produced. The production of winds is controlled by the accretion disk physics, in particular, the nature of disk cooling via neutrino emission and photodisintegration of heavy nuclei. These temperature-dependent processes depend o...
متن کاملPolarization change due to fast winds from accretion disks
A fraction of the radiation produced by an accretion disk may be Thomson scattered by a wind flowing away from the disk. Employing a simple plane-parallel model of the wind, we calculate the polarization of the scattered radiation and find that its sign depends on the wind velocity, β = v/c. In the case, 0.12 < β < 0.78, the polarization is parallel to the disk normal, i.e., it is orthogonal to...
متن کاملSpectral Signatures of Winds from Accretion Disks around Black Holes
Accretion and outflows are common in systems which include compact objects such as black holes and neutron stars. In the last three decades, numerous models have been built to produce jets and outflows. In the case of black holes, since no matter can escape out of the horizon, some suggested that the jets are formed in the strong field region around black holes in the form of pair plasma (Type ...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1990
ISSN: 0252-9211
DOI: 10.1017/s0252921100068676