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1995ApJS..101..259Thompson+
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W.W. Hansen Experimental Physics Laboratory and
Department of Physics, Stanford University, Stanford CA
94305 USA
Max-Planck-Institut für Extraterrestrische Physik,
Giessenbachstr D-85748 Garching FRG
Department of Physics, Hampden-Sydney College,
Hampden-Sydney, VA 23943 USA
Grumman Aerospace Corporation, Bethpage, NY 11714
USA
1e-mail:djt@egret.gsfc.nasa.gov
2USRA Research Associate
3Hughes STX
4Compton Observatory Science Support Center,
operated by USRA. Present address: Astronomy Department, University of Maryland, College Park, MD
5NAS-NRC Research Associate
6NAS-NRC Senior Research Associate
Abstract:
The second catalog of high-energy gamma-ray observations from the
Energetic Gamma Ray Experiment Telescope (EGRET) on the
Compton Gamma Ray Observatory includes data from Phase 1 (1991 April - 1992 November) and
Phase 2 (1992 November - 1993 September) of the mission.
In addition to including more data than the first EGRET catalog
(Fichtel et al. 1994b), this catalog uses an improved model of the diffuse galactic gamma radiation.
The 129 sources in the catalog include one solar flare bright enough to be detected as a source,
the Large Magellanic Cloud, five pulsars, 40 high-confidence identifications of active galactic nuclei,
11 AGN identifications with lower confidence, and 71 sources not yet identified with known objects.
Also included are approximate upper limits for gamma-ray sources at any point in the sky and
information about sources listed in the first EGRET catalog but not appearing in this one.