The clumpy medium around distant radio galaxies

Details The clumpy medium around distant radio galaxies The clumpy medium around distant radio galaxies

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....97..647p&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 97, March 1989, p. 647-665.

Astronomy and Astrophysics

Astronomy

98

Radio Galaxies, Radio Observation, Depolarization, Emission Spectra, Galactic Nuclei, Polarized Radiation, Radio Emission, Very Large Array (Vla)

Scientific paper

The polarization properties of distant 3C radio galaxies with strong nuclear or extended optical emission lines are studied, using radio observations at 6 and 20 cm wavelengths. Rotation-measure variations of magnitude 80-300 radians/sq m are observed on a scale size of about 10-20 kpc. It is found that the depolarization of the radio lobes is strongest when the radio emission is within about 60-100 kpc of the host-galaxy nucleus. The results imply that a clumpy Faraday medium capable of depolarizing the radio emission exists in the host-galaxy environment.

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