Hostname: page-component-848d4c4894-2pzkn Total loading time: 0 Render date: 2024-05-16T14:33:22.676Z Has data issue: false hasContentIssue false
  • English
  • Français

High S/N ROSAT-PSPC Observations of the Quasar PG 1116+215: Power Law Shape of the Soft X-ray Spectrum

Published online by Cambridge University Press:  19 July 2016

M.-H Ulrich  and
S. Molendi
M.-H Ulrich
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching, Germany mulrich@eso.org
S. Molendi
Affiliation:
Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstr. 1, D-85748 Garching, Germany sil@mpe-garching.mpg.de

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The quasar PG 1116+215 (Schmidt and Green, 1983) was selected because it is an intrinsically bright low redshift quasar. With z = 0.177 the soft X-ray emission is not significantly redshifted outside the ROSAT band. Its apparent magnitude mv = 15.04 (Véron and Véron, 1989) corresponds to Mv = −25.0 for H0 = 50 km s−1 Mpc−1 and q0 = 0. An additional selection criterion was low NH. Radio observations give NH = 1.44 × 1020 cm−2 (Elvis, Lockman and Wilkes, 1989).

Type
Variability
Information
Symposium - International Astronomical Union , Volume 159: Multi-Wavelength Continuum Emission of AGN , 1994 , pp. 197 - 200
Copyright
Copyright © Kluwer 1994 

References

Elvis, M., Lockman, F.J. and Wilkes, B.J.: 1989, Astronomical Journal 97, 777 CrossRefGoogle Scholar
Molendi, S., Maccacaro, T. and Schaeidt, S.: 1993, Astronomy and Astrophysics , in press Google Scholar
Pounds, K.A., Nandra, K., Stewart, G.C., George, I.M. and Fabian, A.C.: 1990, Nature 344, 132 CrossRefGoogle Scholar
Schaeidt, S., Hasinger, G. and Trümper, J.: 1992, MPE Report 335, 191 Google Scholar
Schmidt, M. and Green, R.F.: 1983, Astrophysical Journal 269, 352 CrossRefGoogle Scholar
Ulrich, M.-H. and Molendi, S.: 1993, Astronomy and Astrophysics , accepted Google Scholar
Véron, M.-P. and Veron, P.: 1989, ESO Scientific Report No. 7 Google Scholar
Williams, O.R., et al.: 1992, Astrophysical Journal 389, 157 CrossRefGoogle Scholar