The AGN Contribution to the Low Redshift Ultraviolet Background

Details The AGN Contribution to the Low Redshift Ultraviolet Background The AGN Contribution to the Low Redshift Ultraviolet Background

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.6302s&link_type=abstract

American Astronomical Society Meeting 203, #63.02; Bulletin of the American Astronomical Society, Vol. 35, p.1310

Astronomy and Astrophysics

Astronomy

Scientific paper

We have constructed a composite extreme ultraviolet spectrum of AGN with z < 1 using archival spectra from The Far Ultraviolet Spectroscopic Explorer. This composite is significantly harder than the composite QSO spectrum calculated from Hubble Space Telescope spectra of QSOs with z > 0.33. We discuss how we use this composite spectrum in combination with an AGN luminosity function and a model for the opacity of the intervening intergalactic medium to calculate the AGN contribution to the low-redshift ultraviolet background radiation field.

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