Optical characteristics of young quasars as sources of the cosmic X-ray background

Details Optical characteristics of young quasars as sources of the cosmic X-ray background Optical characteristics of young quasars as sources of the cosmic X-ray background

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983stin...8421488b&link_type=abstract

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Computer Science

Background Radiation, Cosmic X Rays, Quasars, X Ray Spectra, Active Galactic Nuclei, Atomic Excitations, Galactic Radiation, Gases, Lyman Alpha Radiation, Photoexcitation, Photoionization, Red Shift, Spectral Emission, Ultraviolet Spectra

Scientific paper

The sources which dominate the thermal cosmic X-ray background cannot have X-ray spectra similar to the power laws measured for bright active galactic nuclei. The optical consequences of this disparity are pursued by considering a standard model for the photoexcitation and heating of the line emitting gas surrounding a central source (e.g., such as a quasar). The optical line emission to be associated with compact young quasar sources having the same X-ray spectrum as the X-ray background is found to be substantially different from that characteristic of typical quasars. Implications on quasar source counts and the identification of such new objects are discussed.

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