Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992xrea.conf...36b&link_type=abstract
In MPI für Extraterrestrische Physik, X Ray Emission from Active Galactic Nuclei and the Cosmic X Ray Background p 36-41 (SEE N9
Astronomy and Astrophysics
Astronomy
1
Seyfert Galaxies, Spectral Signatures, Spectrum Analysis, X Ray Spectra, Active Galactic Nuclei, Ginga Satellite, Line Spectra, X Ray Astronomy
Scientific paper
Results of detailed analyses of good statistical data based on Ginga observations (the energy range: 1.5 to 37 keV) are presented. From these results it was established that the overall X-ray spectra of Seyfert galaxies generally rule out a model consisting of a simple power law with uniform absorption plus an iron emission line. Spectra of some Seyfert galaxies (IC4329A, NGC7469, MCG-6-30-15 etc.) are well fitted to the recently favored reflection model, but those of some other Seyfert galaxies (NGC4151, NGC6814, NGC5506 etc.) rule out this model. The spectra of NGC4151 and NGC6814 are well fitted to a partial covering model. On the other hand softness variability of NGC5506 can be modeled either by partial covering of the hard X-ray source or as thermal bremstrahlung emission. The spectrum of this source also shows the signatures of cold thick matter near the central engine characteristic by an iron fluorescence line at 6.4 keV and a hard tail attributed to Compton reflection of X-ray source by the cold matter. This composite feature would be a general model for X-ray spectra of Seyfert galaxies.
Bond Ian A.
Matsuoka Masaru
Yamauchi Makoto
No associations
LandOfFree
X ray spectral structure of Seyfert galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with X ray spectral structure of Seyfert galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X ray spectral structure of Seyfert galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1491905