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Probing Magnetic Fields With SNRs

  • Roland Kothes (a1)

Abstract

As supernova remnants (SNRs) expand, their shock waves freeze in and compress magnetic field lines they encounter; consequently we can use SNRs as magnifying glasses for interstellar magnetic fields. A simple model is used to derive polarization and rotation measure (RM) signatures of SNRs. This model is exploited to gain knowledge about the large-scale magnetic field in the Milky Way. Three examples are given which indicate a magnetic anomaly, an azimuthal large-scale magnetic field towards the anti-centre, and a chimney that releases magnetic energy from the plane into the halo.

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References

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Kothes, R., Fürst, E., & Reich, W. 1998, A&A 331, 661
Kothes, R. & Brown, J.-A. 2008, Proc. IAU Symposium 259, 75
Landecker, T. L., Reich, W., Reid, R., et al. 2010, A&A 520, 80
Taylor, A. R., Gibson, S. J., Peracaula, M., et al. 2003, AJ 125, 3145
Uyaníker, B., Kothes, R., & Brunt, C. M. 2002, ApJ 565, 1022
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