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Protostellar X-Rays, Jets, and Bipolar Outflows

Published online by Cambridge University Press:  25 May 2016

Frank H. Shu  and
Hsien Shang
Frank H. Shu
Affiliation:
Astronomy Department, University of California, Berkeley, CA 94720-3411, USA
Hsien Shang
Affiliation:
Astronomy Department, University of California, Berkeley, CA 94720-3411, USA

Abstract

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We review the theory of x-winds in young stellar objects (YSOs). In particular, we consider how a model where the central star does not corotate with the inner edge of the accretion disk may help to explain the enhanced emission of X-rays from embedded protostars. We argue, however, that the departure from corotation is not large, so a mathematical formulation that treats the long-term average state as steady and axisymmetric represents a useful approximation. Magnetocentrifugally driven x-winds of this description collimate into jets, and their interactions with the surrounding molecular cloud cores of YSOs yield bipolar molecular outflows.

Type
III. Theoretical Models
Information
Symposium - International Astronomical Union , Volume 182: Herbig-Haro Flows and the Birth of Low Mass Stars , 1997 , pp. 225 - 239
Copyright
Copyright © Kluwer 1997 

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