Observations of Seyferts by OSSE and parameters of their X-ray/gamma-ray sources

Details Observations of Seyferts by OSSE and parameters of their X-ray/gamma-ray sources Observations of Seyferts by OSSE and parameters of their X-ray/gamma-ray sources

2000-06-11

arxiv.org/abs/astro-ph/0006151v1

Astrophys.J. 542 (2000) 703

Astronomy and Astrophysics

Astrophysics

ApJ, 10 Nov. 2000, in press, 13 pages

Scientific paper

10.1086/317046

We present a summary of spectra of Seyfert galaxies observed by the OSSE detector aboard Compton Gamma Ray Observatory. We obtain average spectra of Seyferts of type 1 and 2, and find they are well fitted by thermal Comptonization. We present detailed parameter ranges for the plasma temperature and the Compton parameter in the case of spherical and slab geometries. We find both the average and individual OSSE spectra of Seyfert 2s are significantly harder than those of Seyfert 1s, which difference can be due to anisotropy of Compton reflection and/or Thomson-thick absorption.

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