The interstellar magnetic field near the Galactic center

Details The interstellar magnetic field near the Galactic center The interstellar magnetic field near the Galactic center

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010an....331...27f&link_type=abstract

Astronomische Nachrichten, Vol.331, Issue 1, p.27

Astronomy and Astrophysics

Astronomy

2

Galaxy: Center, Ism: General, Ism: Magnetic Fields, Ism: Structure

Scientific paper

We review the current observational knowledge of the interstellar magnetic field within ˜150 pc of the Galactic center. We also discuss the various theoretical scenarios that have been put forward to explain the existing observations. Our critical overview leads to two important conclusions: (1) The interstellar magnetic field near the GC is approximately poloidal on average in the diffuse intercloud medium and approximately horizontal in dense interstellar clouds. (2) In the general intercloud medium, the field is relatively weak and probably close to equipartition with cosmic rays (B ˜ (6-20) \muG), but there exist a number of localized filaments where the field is much stronger (some filaments could possibly have {B \gtrsim 1} mG). In dense interstellar clouds, the field is probably rather strong, with typical values ranging between a few 0.1 mG and a few mG.

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