Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...339..674m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 339, April 15, 1989, p. 674-688.
Astronomy and Astrophysics
Astrophysics
47
Active Galactic Nuclei, Infrared Radiation, Quasars, Seyfert Galaxies, Ultraviolet Radiation, X Ray Sources, Accretion Disks, Continuous Radiation, Light Emission, Luminosity, Red Shift, Visible Spectrum
Scientific paper
A sample of 122 quasars and Seyfert galaxies was analyzed and it was found that the NIR 7500 A rest frame luminosity is more linearly related to the X-ray luminosity than is the optical luminosity. It is also found that the mean spectral slope between 7500 and 4200 A in the rest frame monotonically flattens with luminosity over more than three orders of magnitude. The present results support models which attribute the IR and X-ray continua to linked nonthermal processes such as synchrotron self-Compton, while the blue-UV bump comes from a different source, such as an accretion disk.
Mushotzky Richard F.
Wandel Amri
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