Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...110..225v&link_type=abstract
Astronomy and Astrophysics, vol. 110, no. 2, June 1982, p. 225-237.
Astronomy and Astrophysics
Astrophysics
20
Magnetic Field Configurations, Plasma Jets, Polarization Characteristics, Radio Galaxies, Spectral Energy Distribution, Astronomical Maps, Galactic Rotation, Galactic Structure
Scientific paper
Westerbork observations at 6 cm, 21 cm, and 49 cm of the extended radio galaxies 3C 31, 3C 66B, and 3C 129 are examined. The magnetic field distributions of these sources are presented; in all three sources, the magnetic field appears to be structured by the combined effects of expansion of jets and shearing or compression along their boundaries. A comparison of the 6 cm and 21 cm polarization data in 3C 66B and 3C 129 made it possible to estimate the relatively large Galactic foreground rotation measures in the directions of these sources, which were taken into account for the derivation of the magnetic field directions. The spectral index distributions (6 cm/21 cm and 21 cm/49 cm) of 3C 66B and 3C 129 are also presented.
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