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Relative distributions of cosmic ray electrons and magnetic fields in the ISM

Published online by Cambridge University Press:  01 November 2008

Rodion Stepanov ,
A. Fletcher ,
A. Shukurov ,
R. Beck ,
L. La Porta  and
F. S. Tabatabaei
Rodion Stepanov
Affiliation:
Institute of Continuous Media Mechanics, 1 Korolyov St., Perm 614013, Russia
A. Fletcher
Affiliation:
School of Mathematics and Statistics, Newcastle University, NE1 7RU, UK
A. Shukurov
Affiliation:
School of Mathematics and Statistics, Newcastle University, NE1 7RU, UK
R. Beck
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
L. La Porta
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
F. S. Tabatabaei
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
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Abstract

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We calculate the relative magnitudes of the fluctuations in total synchrotron intensity in the interstellar medium, both from observations and from theory under various assumptions about the correlation or anticorrelation between cosmic rays and interstellar magnetic fields. The results are inconsistent with local energy equipartition between cosmic rays and magnetic fields. The distribution of cosmic rays must be rather uniform at scales of order 1 kpc, whereas interstellar magnetic fields vary at much smaller scales.

Keywords

Cosmic rays – magnetic fields – radio continuum
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S259: Cosmic Magnetic Fields: From Planets, to Stars and Galaxies , November 2008 , pp. 93 - 94
Copyright
Copyright © International Astronomical Union 2009

References

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Padoan, P. & Scalo, J. 2005, ApJ 624, L97CrossRefGoogle Scholar
Roger, R. S., Costain, C. H., Landecker, T. L., & Swerdlyk, C. M. 1999, A&AS 137, 7Google Scholar
Tabatabaei, F. S., Beck, R., Krause, M., et al. 2007, A&A 475, 133Google Scholar