The X and UV emissions of active galactic nuclei

Details The X and UV emissions of active galactic nuclei The X and UV emissions of active galactic nuclei

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986acasn..27..343l&link_type=abstract

(Acta Astronomica Sinica, vol. 27, no. 4, 1986, p. 343-351) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 11, June 1

Statistics

Computation

Active Galactic Nuclei, Black Holes (Astronomy), Quasars, Seyfert Galaxies, Ultraviolet Radiation, X Ray Irradiation, Computational Astrophysics, Heao 2, Monte Carlo Method, Nonthermal Radiation, Statistical Analysis, Synchrotron Radiation

Scientific paper

A statistical analysis of 87 optically selected quasars and 30 type I Seyfert galaxies is performed, and the relation between the 2-keV monochromatic X-ray luminosity and the approximately 2500-A UV luminosity is determined using a quasi-Monte-Carlo method. A semiquantitative physical analysis rules out several radiative mechanisms. The results show the most plausible dominant radiation in the band from 2500 A UV to 2 keV soft X-ray to be nonthermal synchrotron radiation. A 'dragging effect' of X radiation being drawn into the black hole is noted for a growing accretion rate, and it is suggested that this effect can explain why the X-ray luminosity increases much more slowly with the accretion rate than does the UV luminosity.

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