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The heao a-2 survey of abell clusters and the x-ray luminosity function
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | McKee, J. D. Serlemitsos, P. J. Pravdo, S. H. Boldt, E. A. Holt, S. S. Marshall, F. E. Mushotzky, R. F. |
| Copyright Year | 1980 |
| Description | The HEAO A-2 all sky data base was surveyed for 2-10KeV X-rau emission from the 225 Abell clusters og galaxies listed in Abell's (1958) catalog which are of distance class four or less, and are within the fraction of the sky surveyed completely by Abell. Thirty-two identifications of clusters with X-ray sources were made, for which 2-10 KeV fluxes and 90% error boxes are presented. Twelve of these identification are new. The X-ray luminosity function was derived for this statistically complete sample and the best exponential fit was found to be f(L) = 20.2 x 10 to the minus 8 power exp (-l(44)/1.9) per cu Mpc 2-10KeV. The relationship between X-ray luminosity and richness was examined and a correlation was found for richness classes 0, 1, and 2. The relationship of X-rau luminosity, Bautz-Morgan type, and Rood-Sastry type was examined. It was found that BM type I's and RS type cD and B have the greatest average luminosity. The contribution of clusters to the X-ray background was calculated from the luminosity function and was found to be 5%, and with 90% certainty, less than 8% in the 2-10 KeV band pass. |
| File Size | 1835465 |
| Page Count | 42 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19800019789 |
| Archival Resource Key | ark:/13960/t94796h7x |
| Language | English |
| Publisher Date | 1980-04-01 |
| Access Restriction | Open |
| Subject Keyword | Space Radiation Galactic Clusters Luminous Intensity Tables Data Collimators Red Shift Emissivity Heao 1 Luminosity Functions Mathematics X Ray Astronomy 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 |
