Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ptep.proc...18u&link_type=abstract
Plasma Turbulence and Energetic Particles in Astrophysics, Proceedings of the International Conference, Cracow (Poland), 5-10 Se
Astronomy and Astrophysics
Astrophysics
Scientific paper
Traditional views considered usually the galactic magnetic field perfectly frozen into the gas while the interstellar turbulence can only randomize the field structure. In the last decade polarization studies of nearby spirals gave evidence that turbulent motions may generate regular magnetic fields, which itself are only partly tied to the gas. As a result of our recent observations we found clear evidence for dynamo action without contamination from spiral arm flows. We present also examples of magnetic fields probably decoupled from bulk gas motions. We definitely prove the existence of regular magnetic fields in an irregular galaxy, which supports non-standard dynamo theories, like the buoyancy dynamo.
Beck Rainer
Chyzy Krzysztof Tadeusz
Knapik Jacek
Soida Marian
Urbanik Marek
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