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Numerical Models of Supershell Dynamics

Published online by Cambridge University Press:  12 April 2016

Mordecai-Mark Mac Low ,
Michael L. Norman  and
Richard A. McCray
Mordecai-Mark Mac Low
Affiliation:
JointInstitute for Laboratory Astrophysics, University of Colorado and National Bureau of Standards, Boulder, CO 80309-0440
Michael L. Norman
Affiliation:
JointInstitute for Laboratory Astrophysics, University of Colorado and National Bureau of Standards, Boulder, CO 80309-0440
Richard A. McCray
Affiliation:
JointInstitute for Laboratory Astrophysics, University of Colorado and National Bureau of Standards, Boulder, CO 80309-0440

Abstract

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Superbubbles play an important role in determining the state of the ISM in both spiral and irregular galaxies. We are modeling supershell dynamics in both homogeneous and stratified atmospheres using ZEUS, a 2-D hydrocode. We find that when a superbubble blows out of a Gaussian atmosphere, the cold, dense shell is not greatly accelerated. In addition, we believe that we observe the Vishniac overstability in radiative, decelerating shells.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 101: Supernova Remnants and the Interstellar Medium , 1988 , pp. 461 - 464
Copyright
Copyright © Cambridge University Press 1988

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