Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...376..480z&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 376, Aug. 1, 1991, p. 480-489.
Astronomy and Astrophysics
Astrophysics
19
Active Galactic Nuclei, Galactic Radiation, X Ray Sources, Electron-Positron Pairs, Nonthermal Radiation
Scientific paper
In the present study of the formation of steep soft X-ray excesses that are superposed on flatter, hard X-ray power-law spectra in nonthermal electron-positron pair cascade sources, the soft excess in pair-cascade AGN models appears as a steep power law superposed on the tail of the UV bump and the flat nonthermal (hard X-ray) power law. The model-parameter space in which an excess in soft X-rays is visible is ascertained, and the time-variability of soft excesses in pair cascade models is examined. It is established that the parameter space in which soft excesses appear encompasses the range of preferred input parameters for a recently development Compton reflection model of UV and X-ray emission from the central engine of an AGN.
Coppi Paolo S.
Zdziarski Andrzej A.
No associations
LandOfFree
Variable soft X-ray excesses in active galactic nuclei from nonthermal electron-positron pair cascades 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 Variable soft X-ray excesses in active galactic nuclei from nonthermal electron-positron pair cascades, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable soft X-ray excesses in active galactic nuclei from nonthermal electron-positron pair cascades will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1725040