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    • EXOSAT X-ray spectra of quasars 

      Comastri, Andrea; Setti, Giancarlo; Zamorani, Giovanni; Elvis, Martin; Wilkes, Belinda Jane; McDowell, Jonathan Christopher; Giommi, Paolo (IOP Publishing, 1992)
      Measurements of the X-ray spectra in the 0.1-10-keV energy range for 17 AGN (mostly PG quasars) using the Exosat Low and Medium Energy arrays are presented. For each object, the best-fit spectral parameters in the medium-energy ...