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Large-scale anisotropy in the extragalactic gamma-ray background as a probe for cosmological antimatterIntrinsic anisotropies in the extragalactic gamma-ray background (EGB), which should be detectable with the forthcoming Gamma Ray Observatory, can be used to examine some of the mechanisms proposed to explain its origin, one of which, the baryon-symmetric big bang (BSBB) model, is investigated here. In this simulation, large domains containing matter and antimatter galaxies produce gamma rays by annihilation at the domain boundaries. This mechanism can produce mountain-chain-shaped angular fluctuations in the EGB flux.
Document ID
19900063633
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gao, Yi-Tian (California, University Los Angeles and Santa Barbara, United States)
Stecker, Floyd W. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Gleiser, Marcelo (California, University Santa Barbara, United States)
Cline, David B. (California, University Los Angeles, United States)
Date Acquired
August 14, 2013
Publication Date
October 1, 1990
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 361
ISSN: 0004-637X
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NSF PHY-89-04035
Distribution Limits
Public
Copyright
Other