Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975afz....11..385b&link_type=abstract
Astrofizika, vol. 11, Aug. 1975, p. 385-395. In Russian.
Astronomy and Astrophysics
Astronomy
4
Galactic Nuclei, Polarization Characteristics, Quasars, Seyfert Galaxies, Brightness Temperature, Extraterrestrial Radiation, Optical Polarization
Scientific paper
Results are presented for polarization observations of the nuclei of five Seyfert galaxies, the N-galaxies 3C 371 and 3C 390.3, and the quasar 3C 345. Changes in the polarization parameters of the two N-galaxies and the quasar are compared with changes in brightness. The existence of a detailed correlation between changes in degree of polarization and brightness is established for 3C 371, and the degree of polarization in the variable component is estimated to be 14.4%. All available data on polarization and brightness are found to reveal a correlation on a time scale of several years for 3C 390.3. It is shown that the degree of polarization in the variable component and the general polarization behavior of this galaxy closely resemble those observed in NGC 4151. It is concluded that 3C 390.3 apparently bears a closer resemblance to the Seyfert galaxies than to 3C 371 in its optical characteristics.
Babadzhaniants M. K.
Gagen-Torn V. A.
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