Criterion for Generation of Winds from Magnetized Accretion Disks

Details Criterion for Generation of Winds from Magnetized Accretion Disks Criterion for Generation of Winds from Magnetized Accretion Disks

2001-08-29

arxiv.org/abs/astro-ph/0108464v1

Astronomy and Astrophysics

Astrophysics

24 pages, 0 figures, ApJ accepted

Scientific paper

10.1086/324039

An analytic model is proposed for non-radiating accretion flows accompanied by up or down winds in a global magnetic field. Physical quantities in this model solution are written in variable-separated forms, and their radial parts are simple power law functions including one parameter for wind strength. Several, mathematically equivalent but physically different expressions of the criterion for wind generation are obtained. It is suggested also that the generation of wind is a consequence of the intervention of some mechanism that redistributes the locally available gravitational energy, and that the Bernoulli sum can be a good indicator of the existence of such mechanisms.

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