Variability at 5 GHz in low luminosity radio nuclei of galaxies and quasars

Details Variability at 5 GHz in low luminosity radio nuclei of galaxies and quasars Variability at 5 GHz in low luminosity radio nuclei of galaxies and quasars

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...120..297e&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 120, no. 2, April 1983, p. 297-301.

Astronomy and Astrophysics

Astronomy

27

Galactic Nuclei, Quasars, Radio Galaxies, Radio Sources (Astronomy), Microwave Emission, Radiant Flux Density, Variability

Scientific paper

The results of a six year program to monitor the 5 GHz flux densities of a sample of low-luminosity compact radio components are presented. These include low-luminosity isolated compact sources in elliptical and spiral galaxies as well as the cores of extended double radio galaxies and quasars. Eight cases of definite variability and four cases of possible variability have been found. No significant difference is apparent for the variability percentages or time scales between the various types of weak sources studied here and the stronger sources investigated by previous authors. The results provide marginal evidence against simple relativistic beaming explanations for high-luminosity compact sources.

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