Magnetic fields in our Galaxy: How much do we know?

Details Magnetic fields in our Galaxy: How much do we know? Magnetic fields in our Galaxy: How much do we know?

2000-10-26

arxiv.org/abs/astro-ph/0010537v1

Astrophys.Space Sci. 278 (2001) 181-184

Astronomy and Astrophysics

Astrophysics

4 pages. To appear in proceedings of IAU Collo.182, a special issue Astrophysics & Space Science

Scientific paper

10.1023/A:1013102711400

The large scale magnetic fields of our Galaxy have been mostly revealed by rotation measures ($RM$s) of pulsars and extragalactic radio sources. In the disk of our Galaxy, the average field strength over a few kpc scale is about 1.8 $\mu$G, while the total field, including the random fields on smaller scales, has a strength of about 5 $\mu$G. The local regular field, if it is part of the large scale field of a bisymmetric form, has a pitch angle of about $-8\degr$. There are at least three, and perhaps five, field reversals from the Norma arm to the outer skirt of our Galaxy.

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