Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.296..819p&link_type=abstract
In ESA, The 23rd ESLAB Symposium on Two Topics in X Ray Astronomy. Volume 2: AGN and the X Ray Background p 819-823 (SEE N90-258
Astronomy and Astrophysics
Astronomy
8
Active Galactic Nuclei, Galactic Mass, Seyfert Galaxies, X Ray Spectra, Bandwidth, Compton Effect, Emission Spectra, Line Spectra, Spectrum Analysis
Scientific paper
The observations with Ginga of three bright Seyfert 1 galaxies, MCG-6-30-15, NGC 7469 and IC4329A, revealed the existence of a new hard X-ray component above 8 keV. This component is probably produced by absorption and Compton scattering processes of the central continuum on to very thick cold matter surrounding the central source. Detection of iron fluorescence emission lines between 100 and 200 eV and energy of 6.4 keV in all these objects supports this interpretation.
Matsuoka Masaru
Piro Luigi
Yamauchi Makoto
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