Radio variability in the nuclei of double radio galaxies and quasars

Details Radio variability in the nuclei of double radio galaxies and quasars Radio variability in the nuclei of double radio galaxies and quasars

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.193..285h&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 193, Oct. 1980, p. 285-293.

Astronomy and Astrophysics

Astronomy

41

Galactic Nuclei, Quasars, Radio Galaxies, Radio Sources (Astronomy), Brightness Temperature, Radio Spectra, Statistical Analysis, Very Long Base Interferometry

Scientific paper

A search for radio variability in the central components of eight extended double radio sources has been made with the Cambridge 5-km telescope. The three radio galaxies observed all showed variability, whereas the central components of the five quasars remained constant. The strongest variations are observed in 3C111, for which extensive data exist. These variations violate the conventional brightness temperature limit if the source is static, but they are consistent with a relativistic jet with gamma of about 2, a value which is also admitted by the statistical properties of central components of double sources.

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