The nature of the optical variations of Seyfert galaxy 3C 120

Details The nature of the optical variations of Seyfert galaxy 3C 120 The nature of the optical variations of Seyfert galaxy 3C 120

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj.....99...49w&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 99, Jan. 1990, p. 49-52.

Other

16

Light Curve, Optical Measurement, Power Spectra, Seyfert Galaxies, Spectrum Analysis, Astronomical Models, Astronomical Photography, Fourier Series, Fourier Transformation

Scientific paper

Results are presented from 61 years of optical observations of the Seyfert galaxy 3C 120. A previously published model of the 3C 120 light curve, derived from power spectrum analysis, is found to be valid for historical as well as current data. It is concluded that the optical variations of 3C 120 can be separated into a linear component, a sinusoidal component, and rapid, high-amplitude flares. Possible sources of the regular variations observed in 3C 120 are also suggested in the context of accretion models and other theoretical models.

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