Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...249...25m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 249, no. 1, Sept. 1991, p. 25-30. Research supported by DFG.
Astronomy and Astrophysics
Astronomy
32
Active Galactic Nuclei, Astronomical Spectroscopy, Seyfert Galaxies, Wave Reflection, X Ray Spectroscopy, Active Galaxies, Satellite Observation, X Ray Astronomy
Scientific paper
Observations of the AGN NGC 4151 are discussed as taken from the Ginga and the HEXE instrument at 4-120 keV with high sensitivity and energy resolution. The observational data demonstrate that the source is in a low state of emission in the X-ray range, and a single power law is developed to describe the spectrum. A second model is also considered to describe the spectrum in which a layer of reflecting cold matter is introduced, but the reflection is considered to be marginal due to the edge-on geometry of the observations. The present data are examined in terms of constraints on the parameters of possible pair models where the X-ray emission is produced by inverse Compton scattering. Pairs are thought to play a minor role in the X-ray/gamma-ray emission of NGC 4151. The source is concluded to be moderately compact and potentially starved of photons, and it is recommended that a broadband observation of the high state of NGC 4151 be undertaken.
Maisack Michael
Yaqoob Tahir
No associations
LandOfFree
A search for reflection features in the X-ray spectrum of NGC 4151 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 A search for reflection features in the X-ray spectrum of NGC 4151, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A search for reflection features in the X-ray spectrum of NGC 4151 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1332570