Published in "Extragalactic Background Radiation", Space
Telescope Science Institute Symposium Series 7, 1995, eds. D. Calzetti,
M. Livio and P. Madau
EXTRAGALACTIC GAMMA-RAY BACKGROUND
Neil Gehrels and Cynthia Cheung
NASA/Goddard Space
Flight Center
Greenbelt, MD 20771
Abstract. We review the observational data of the extragalactic
gamma-ray
background obtained before the launch of the Compton Gamma Ray
Observatory and the
theoretical interpretations. We also summarize the latest AGN
observations by Compton
which pertain to the origin of the extragalactic gamma-ray background
and their implications.
Table of Contents
INTRODUCTION
- LOW-ENERGY MEASUREMENTS (0.1-10 MeV)
- Spectral Characteristics
- Spatial Characteristics
- INTERPRETATION OF LOW-ENERGY GRB SPECTRUM
- HIGH-ENERGY MEASUREMENTS OF GRB (>10 MeV)
- INTERPRETATION OF HIGH-ENERGY GRB SPECTRUM
- GRB from Proton-Antiproton Annihilation
- GRB from Primordial Blackholes
- COMPTON RESULTS AND IMPLICATIONS FOR GRB
- Compton Observations of AGN
- Implications for GRB
- OTHER TOPICS
- TeV Observations and Constraints on IR Background
- GRB from Type Ia SN
- REFERENCES
