Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...135..238s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 135, no. 2, June 1984, p. 238-248.
Astronomy and Astrophysics
Astrophysics
64
Galactic Radio Waves, Linear Polarization, Radio Emission, Depolarization, Faraday Effect, Interstellar Space, Microwave Emission
Scientific paper
The author discusses observations of the linearly polarized component of galactic radio emission at the frequencies 408, 465, 610, 820, and 1411 MHz. The interpretation in terms of the local galactic magnetic field has been given elsewhere (Spoelstra, 1977, 1979). The polarization characteristics of this emission show in general low rotation measures (about 8 rad m-2). At 1411 MHz the polarization percentages are below 35%. The magneto-ionic properties of the interstellar medium vary with a typical scale of 10 to 75 pc. The origin of the observed polarization characteristics is at an average distance of about 450 pc. This value has been derived from a comparison of the polarization directions of the radio emission and of polarized starlight.
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