Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26as...61..547s&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 61, Sept. 1985, p. 547-571.
Astronomy and Astrophysics
Astrophysics
28
Centimeter Waves, Extragalactic Radio Sources, Polarization (Waves), Quasars, Radio Galaxies, Astronomical Catalogs, Faraday Effect, Intergalactic Media, Radiant Flux Density
Scientific paper
Synthesis radio observations have been made of 27 sources to determine the component polarization at a wavelength of 49 cm. The sources were chosen from a complete flux density limited sample on the basis of relatively little depolarization at shorter wavelengths. The results are presented in the form of integrated component parameters and maps of the total and polarized intensity distributions. The component polarization data have been used to determine, or set limits to, the rate of depolarization, and derived quantities are presented in tabular form for all 94 sources from the complete sample. The results are briefly discussed, and in particular it is noted that bridge emission in double radio sources exhibits a low degree of polarization at 49 cm. It is suggested that this may be the result of depolarization in ionized gas associated with the parent optical object. The observations are consistent with an excess density of order 100 m-3 throughout the bridge region.
Conway R. G.
Strom Richard G.
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