Faraday effects in the spiral galaxy M 51

Details Faraday effects in the spiral galaxy M 51 Faraday effects in the spiral galaxy M 51

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...265..417h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 265, no. 2, p. 417-428.

Astronomy and Astrophysics

Astrophysics

33

Faraday Effect, Interstellar Magnetic Fields, Spiral Galaxies, Linear Polarization, Polarized Radiation, Radio Emission, Very Large Array (Vla)

Scientific paper

The total and linearly polarized radio-continuum emission from M 51 was observed with the VLA at wavelengths of 18.0 and 20.5 cm with 43-arcsec resolution. The distribution of the polarized emission at these two wavelengths is found to be strongly affected by Faraday depolarization. It is noted that the galaxy may not be transparent to polarized emission at decimeter wavelengths, in which case one is observing an upper layer of the disk. This may be the reason that one clearly sees the effects of well-defined tubes of magnetic field emerging from the plane in the distribution of the Faraday rotation measures.

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