A possible relationship between ring magnetism and H I gas in spiral galaxies

Details A possible relationship between ring magnetism and H I gas in spiral galaxies A possible relationship between ring magnetism and H I gas in spiral galaxies

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....91..541v&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 91, March 1986, p. 541-545.

Astronomy and Astrophysics

Astronomy

17

Hydrogen Clouds, Interstellar Gas, Interstellar Magnetic Fields, Spiral Galaxies, Density Wave Model, Polarimetry, Tides

Scientific paper

Polarization observations of spiral galaxies have revealed so far only two types of large-scale distribution for their magnetic fields, either mostly ring shaped or mostly spiral shaped. A newly found relationship is reported here, namely: the observation of ring magnetism in the presence of a 'large' quantity of H I gas mass, and the observation of spiral magnetism in the presence of a 'small' quantity of H I gas mass. A previously known relationship is strengthened here, namely: the observation of spiral magnetism in the presence of a large tidal interaction with a companion galaxy, and the observation of ring magnetism in the presence of a small tidal interaction. Both relationships appear to be physically reasonable, and complementary.

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