Interferometric observations of compact components in extragalactic radio sources

Details Interferometric observations of compact components in extragalactic radio sources Interferometric observations of compact components in extragalactic radio sources

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.197..921k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 197, Dec. 1981, p. 921-930. Research supported by the Science Research

Astronomy and Astrophysics

Astronomy

14

Electron Density (Concentration), Extragalactic Radio Sources, Interferometry, Linear Polarization, Faraday Effect, Polarized Electromagnetic Radiation

Scientific paper

Interferometric observations at wavelengths of 31 and 73 cm with resolutions of 2.7 and 1.2 arcsec respectively have been used to study the linear polarization of compact components in extended radio sources. No polarization was detected in compact central components. A comparison of the polarization found in outer heads with values at 6 cm suggests that Faraday depolarization occurs, and that the median value of the thermal electron density in the heads is 520/cu m to within a factor of 2. From the value of energy density in the heads, the outwards expansion velocity of the heads appears to be (0.03 + or - 0.02)c.

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