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Possible evidence for the existence of antimatter on a cosmological scale in the universe.Initial results of a detailed calculation of the cosmological gamma-ray spectrum from matter-antimatter annihilation in the universe. The similarity between the calculated spectrum and the present observations of the gamma-ray background spectrum above 1 MeV suggests that such observations may be evidence of the existence of antimatter on a large scale in the universe.
Document ID
19720028301
Document Type
Reprint (Version printed in journal)
Authors
Stecker, F. W.
Morgan, D. L., Jr.
Bredekamp, J. (NASA Goddard Space Flight Center Theoretical Studies Branch,Greenbelt, Md., United States)
Date Acquired
August 6, 2013
Publication Date
November 22, 1971
Publication Information
Publication: Physical Review Letters
Volume: 27
Subject Category
SPACE SCIENCES
Distribution Limits
Public
Copyright
Other