The authors present the X-ray spectral analysis in the 0.1-2.4 keV ROSAT band of a complete sample of X-ray selected AGN. Using the 80 AGN in the Cambridge-Cambridge ROSAT Serendipity Survey (CRSS) (68 QSOs and 12 narrow emission line galaxies, NLXGs) they have made a comparison between the X-ray spectral properties of QSOs and NLXGs. A maximum-likelihood analysis was used to find the mean power-law energy spectral index <αx> and the standard deviation σ for QSOs and NLXGs, assuming the intrinsic distribution to be Gaussian. The authors found no difference between QSOs and NLXGs: <αx> = 1.32 with dispersion σ = 0.33 for the QSO sample and <αx> = 1.30 with σ = 0.49 for the sample of 13 NLXGs (8 from the CRSS sample and 5 from the EMSS).
Roentgenstrahlung from the Universe
- Pub Date:
- February 1996
- X Rays: Active Galactic Nuclei;
- X Rays: Quasars;
- X Rays: Emission-Line Galaxies