The Extragalactic Gamma-Ray Background: Results from CGRO
P. Sreekumar
Abstract
The first dedicated all-sky survey in gamma-rays by the Compton
Observatory has provided new measurements on the intensity and spectrum of
the diffuse extragalactic gamma-rays. Signficantly revised estimates of
the MeV emission from the COMPTEL experiment, together with the evidence
for a smooth power-law extending from 30 MeV to almost 100 GeV, has
provided the best broadband spectral coverage to address the origin of
the gamma-ray background. Possible contributions from truly diffuse
processes and from unresolved point sources such as supernovae, various
types of active galactic nuclei, etc will be reviewed.
The next major improvement in resolving the origin of the
gamma-ray background can be expected only from detectors with
significantly enhanced spectral capabilities.
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On 16 Jul 1999, 13:19.