Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984afz....21..217b&link_type=abstract
(Astrofizika, vol. 21, Sept.-Oct. 1984, p. 217-231) Astrophysics (ISSN 0571-7132), vol. 20, no. 5, March 1985, p. 461-469. Trans
Astronomy and Astrophysics
Astrophysics
6
Light Curve, Luminosity, Quasars, Seyfert Galaxies, Variability
Scientific paper
A composite light curve for the quasar 3C 345 is constructed for the complete time during which it has been observed optically (B band): 1965-1983. It is found that there has been a systematic increase in the mean luminosity of 3C 345 during the last 15 years at a rate of about 0.05 m/yr. It is suggested that there is connection between the optical outbursts of 3C 345 with duration 1-2 yr and the appearance of compact radio components moving with superluminal velocities in its millisecond structure. Similar relationships can be traced in the N galaxy 3C 120. The appearance of a new radio component in the millisecond radio structure of 3C 345 associated with a 'slow' outburst in 1982 is predicted. The occurrence in 1972-1975 of 'fast' outbursts with duration of about 10 days agrees with a periodicity of 327 days, in agreement with the determination of a period (P = 321 days) for these outbursts obtained by Kinman et al. (1969) from a number of observations during 1965-1967.
Babadzhaniants M. K.
Belokon' E. T.
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