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The Magnetic Field Near the Local Bubble

Published online by Cambridge University Press:  12 April 2016

Carl Heiles*
Affiliation:
University of California, Berkeley, CA 94720, USA

Abstract

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There are almost no direct observational indicators of the magnetic field inside the local bubble. Just outside the bubble, the best tracers are stellar polarization and HI Zeeman splitting. These show that the local field does not follow the large-scale Galactic field. Here we discuss whether the deformation of the large-scale field by the local HI shells is consistent with the observations. We concentrate on the Loop 1 region, and find that the field lines are well-explained by this idea; in addition, the bright radio filaments of Radio Loop 1 delineate particular field lines that are “lit up” by an excess of relativistic electrons.

Type
Part V Magnetic Fields, Molecular Clouds, and Interstellar Bubbles
Copyright
Copyright © Springer-Verlag 1998

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