Browsing by Keyword "X Ray Spectroscopy"

Now showing items 1-2 of 2

    • Infrared to x-ray spectral energy distributions of high redshift quasars 

      Bechtold, Jill; Elvis, Martin S.; Fiore, Fabrizio; Kuhn, Olga; Cutri, Roc M.; McDowell, Jonathan Christopher; Rieke, Marcia; Siemiginowska, Aneta L.; Wilkes, Belinda Jane (IOP Publishing, 1994)
      We have observed 14 quasars with z greater than 2.8 with the ROSAT-PSPC, and detected 12 of them, including the z=4.11 quasar 0000-263. We present the first x-ray spectrum of a radio quiet quasar with z greater than 3, ...

    • Multifrequency observations of KAZ 102 during the ROSAT all-sky survey 

      Treves, A.; Fink, H. H.; Malkan, M.; Wagner, S. J.; Wilkes, Belinda Jane; Baganoff, F.; Heidt, J.; Pian, E.; Sadun, A.; Schaeidt, S.; Bonnell, J. T.; Brinkmann, W.; de Martino, D.; Maraschi, L.; Tanzi, E. G.; Ulrich, M. H.; Wamsteker, W. (IOP Publishing, 1995)
      The bright quasar Kaz 102, which lies in the vicinity of the North Ecliptic Pole, was monitored during the ROSAT All Sky Survey for 121.5 days from 1990 July 30 to 1991 January 25. In the course of the survey, optical ...