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On syntheses of the x-ray background with power-law sources
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Swank, J. H. Franceschini, A. Boldt, E. A. Dezotti, G. Cavaliere, A. Marshall, F. E. Danese, L. Szymkowiak, A. E. |
| Copyright Year | 1981 |
| Description | The conditions under which the combined emission from power law sources can mimic the X-ray background (XRB) spectrum in the 3-50 keV range are considered in view of HEAO 1 A-2 experiment measurements, and it is confirmed that a good fit may be obtained. The required spectral properties of the component sources differ, however, from those observed for local active galactic nuclei. Constraints are deduced for both the low luminosity extension and evolution of such local objects, and it is shown that any other class of sources contributing to the X-ray background must be characterized by an energy spectral index lower than about 0.4, which is the mean index of the XRB, and exhibit sleeper spectra at higher energies. |
| File Size | 930858 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850004532 |
| Archival Resource Key | ark:/13960/t55f3n63b |
| Language | English |
| Publisher Date | 1981-08-01 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Galactic Clusters Active Galactic Nuclei Power Spectra Bremsstrahlung X Ray Spectra Background Radiation X Ray Sources Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
