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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 [email protected]
S. Molendi
Affiliation:
Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstr. 1, D-85748 Garching, Germany [email protected]

Extract

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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 H 0 = 50 km s−1 Mpc−1 and q 0 = 0. An additional selection criterion was low N H. Radio observations give N H = 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

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