Large-scale anisotropy in the extragalactic gamma-ray background as a probe for cosmological antimatter

Details Large-scale anisotropy in the extragalactic gamma-ray background as a probe for cosmological antimatter Large-scale anisotropy in the extragalactic gamma-ray background as a probe for cosmological antimatter

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...361l..37g&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 361, Oct. 1, 1990, p. L37-L40. Research supported by DOE.

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Antimatter, Background Radiation, Big Bang Cosmology, Gamma Ray Astronomy, Nuclear Astrophysics, Anisotropy, Annihilation Reactions, Baryons, Computational Astrophysics

Scientific paper

Intrinsic 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.

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