Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985afz....22..247b&link_type=abstract
(Astrofizika, vol. 22, Mar.-Apr. 1985, p. 247-255) Astrophysics (ISSN 0571-7132), vol. 21, no. 2, Sept. 1985, p. 148-153. Transl
Astronomy and Astrophysics
Astrophysics
3
Cross Correlation, Galactic Nuclei, Periodic Variations, Quasars, Data Correlation, Long Term Effects, Radio Spectra, Visible Spectrum
Scientific paper
For the quasar 3C 345, a cross-correlation analysis is carried out on the data on optical and radio variability over long (on the order of hundreds of days) time scales. A high degree of correlation is found between the radio outbursts and the 'slow' component (the characteristic time of variation being around 1 yr) in the optical brightness variations, the radio outbursts lagging behind by 700-1000 days. A comparison of the magnitude of the lag with the apparent, 'superluminal' velocity of the radio components of the millisecond structure of 3C 345 enables the distance from the nucleus of the region in which the radio emission arises to be estimated.
Babadzhaniants M. K.
Belokon' E. T.
Gorokhov V. L.
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