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X-ray ionization of protostellar disks

Published online by Cambridge University Press:  25 May 2016

A.E. Glassgold ,
J. Igea  and
J. Najita
A.E. Glassgold
Affiliation:
New York University, New York, NY 10003, USA
J. Igea
Affiliation:
New York University, New York, NY 10003, USA
J. Najita
Affiliation:
Center for Astrophysics, Cambridge, MA 02138, USA

Abstract

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X-rays from young stellar objects can influence the physical properties of their surroundings. A particularly interesting example is the ionization of the accretion disk by hard X-rays at distances of the order of 1 AU or more. We show that X-rays induce a layered ionization structure in which the outer layer is sufficiently ionized to permit the Balbus-Hawley instability to operate and to allow accretion.

Type
Star Formation
Information
Symposium - International Astronomical Union , Volume 178: Molecules in Astrophysics: Probes and Processes , 1997 , pp. 155 - 162
Copyright
Copyright © Kluwer 1997 

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