The variability and radio structure of 3C 159

Details The variability and radio structure of 3C 159 The variability and radio structure of 3C 159

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.213..945b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 213, April 15, 1985, p. 945-951.

Astronomy and Astrophysics

Astronomy

7

Radiant Flux Density, Radio Galaxies, Variability, Astronomical Maps, Earth Ionosphere, Faraday Effect, Light Curve, Linear Polarization

Scientific paper

The 408-MHz flux density of the high-luminosity radio galaxy 3C 159 shows strong evidence for variability. Intrinsic variability or variability due to propagation effects in the interstellar medium would imply the existence of a strong, very compact, component in the radio structure, whereas MERLIN and VLBI observations show no evidence for such a component. The authors conclude that the most likely explanation of these apparently contradictory observations is that the flux density changes are caused by a combination of exceptionally high linear polarization and variable ionospheric Faraday rotation.

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