The broad-band X-ray spectrum of a QSO sample

Details The broad-band X-ray spectrum of a QSO sample The broad-band X-ray spectrum of a QSO sample

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983stin...8433333w&link_type=abstract

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Physics

Broadband, Quasars, Seyfert Galaxies, X Ray Sources, X Ray Spectra, Emission Spectra, Flux Density, Galactic Nuclei, Heao 1, Heao 2, Line Spectra, Red Shift, X Ray Spectroscopy

Scientific paper

A sample of 25 QSOs was used to investigate the average spectrum between the soft X-ray energy band of the Einstein Observatory image proportional counter, and the higher energy band of the HEAO 1 A2 experiment. The spectrum is similar to thoe exhibited by Seyfert galaxies and narrow emission line galaxies above 2 keV. The spectrum is soft enough that if these objects are typical of the higher redshift, more radio-quiet QSOs, then it is possible to exclude QSOs as being the dominant origin of the diffuse X-ray background.

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