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Reprise of the Supershells

Published online by Cambridge University Press:  29 January 2014

Sayan Chakraborti  and
Alak Ray
Sayan Chakraborti
Affiliation:
Harvard University, Cambridge MA 02138, USA email: schakraborti@fas.harvard.edu
Alak Ray
Affiliation:
Tata Institute of Fundamental Research, Mumbai 400005, India email: akr@tifr.res.in
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Abstract

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Neutral hydrogen cavities have been detected in the Milky Way for decades and more recently in other nearby star-forming galaxies. It has been suggested that at least a fraction of them may be expanding supershells driven by the combined mechanical feedback from multiple supernovae occurring in an OB association. Yet most extragalactic cavities had neither a demonstrated expansion velocity nor an identified OB association inside them. In this presentation, we will outline how new multiwavelength observations are providing us with systems to test the theory of supershells driven by the mechanical feedback from multiple supernovae. We shall also discuss the consequences of these recent results in the context of supernova feedback, propagating star formation and particle acceleration.

Keywords

supernovae: general — Galaxies: individual (M101) — ISM: Bubbles — Radio lines: ISM
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S296: Supernova Environmental Impacts , January 2013 , pp. 260 - 264
Copyright
Copyright © International Astronomical Union 2014 

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