Variability pattern from X-ray to IR wavelengths in the active nucleus of NGC 1566

Details Variability pattern from X-ray to IR wavelengths in the active nucleus of NGC 1566 Variability pattern from X-ray to IR wavelengths in the active nucleus of NGC 1566

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...256..375b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 256, no. 2, p. 375-398.

Astronomy and Astrophysics

Astronomy

41

Active Galactic Nuclei, Infrared Radiation, Variability, X Ray Sources, Emission Spectra, Exosat Satellite, Iue, Spaceborne Astronomy, Spectral Line Width, Ultraviolet Spectra

Scientific paper

Results are presented of a multiwavelength monitoring, from August 1984 to January 1986, of the active galactic nucleus in NGC 1566, for which data were collected in the X-rays, ultraviolet, visible, and near-infrared domains. Results disclosed significant variability with time of continuous emission from NGC 1566 at all wavelengths. In particular, the soft X-rays varied by about 40 percent on a time scale shorter than a month. The spectrum of the variable component, as it appears along an outburst which developed over six months can be represented by a power law with index beta = 1.5 from the NIR to the UV and beta less than 1 at higher frequencies.

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