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The Third EGRET Catalog of High-Energy Gamma-Ray SourcesThe third catalog of high-energy gamma-ray sources detected by the EGRET telescope on the Compton Gamma Ray Observatory includes data from 1991 April 22 to 1995 October 3 (Cycles 1, 2, 3, and 4 of the mission). In addition to including more data than the second EGRET catalog (Thompson et al. 1995) and its supplement (Thompson et al. 1996), this catalog uses completely reprocessed data (to correct a number of mostly minimal errors and problems). The 271 sources (E greater than 100 MeV) in the catalog include the single 1991 solar flare bright enough to be detected as a source, the Large Magellanic Cloud, five pulsars, one probable radio galaxy detection (Cen A), and 66 high-confidence identifications of blazars (BL Lac objects, flat-spectrum radio quasars, or unidentified flat-spectrum radio sources). In addition, 27 lower-confidence potential blazar identifications are noted. Finally, the catalog contains 170 sources not yet identified firmly with known objects, although potential identifications have been suggested for a number of those. A figure is presented that gives approximate upper limits for gamma-ray sources at any point in the sky, as well as information about sources listed in the second catalog and its supplement which do not appear in this catalog.
Document ID
19980237754
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Hartman, R. C.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Bertsch, D. L.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Bloom, S. D.
(National Academy of Sciences - National Research Council Greenbelt, MD United States)
Chen, A. W.
(National Academy of Sciences - National Research Council Greenbelt, MD United States)
Deines-Jones, P.
(National Academy of Sciences - National Research Council Greenbelt, MD United States)
Esposito, J. A.
(Universities Space Research Association Greenbelt, MD United States)
Fichtel, C. E.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Friedlander, D. P.
(Raytheon STX Corp. Greenbelt, MD United States)
Hunter, S. D.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
McDonald, L. M.
(Raytheon STX Corp. Greenbelt, MD United States)
Sreekumar, P.
(Universities Space Research Association Greenbelt, MD United States)
Thompson, D. J.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Jones, B. B.
(Stanford Univ. Stanford, CA United States)
Lin, Y. C.
(Stanford Univ. Stanford, CA United States)
Michelson, P. F.
(Stanford Univ. Stanford, CA United States)
Nolan, P. L.
(Stanford Univ. Stanford, CA United States)
Tompkins, W. F.
(Stanford Univ. Stanford, CA United States)
Kanbach, G.
(Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Mayer-Hasselwander, H. A.
(Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Muecke, A.
(Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Date Acquired
September 6, 2013
Publication Date
January 1, 1998
Subject Category
Space Radiation
Funding Number(s)
CONTRACT_GRANT: NAS5-31210
CONTRACT_GRANT: BMFT-50-QV-9095
CONTRACT_GRANT: NAG5-1605
CONTRACT_GRANT: NAG5-1742
CONTRACT_GRANT: NAG5-3696
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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