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Optical characteristics of young quasars as sources of the cosmic X-ray background (1984)

Boldt, E. ; Leiter, D.

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Publication Date: 2011-08-18

Description: 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.

Keywords: ASTROPHYSICS

Type: Astrophysical Journal, Part 1 (ISSN 0004-637X); 276; 427-433

Format: text

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