Physical Origin, Evolution and Observational Signature of Diffused Antiworld

Details Physical Origin, Evolution and Observational Signature of Diffused Antiworld Physical Origin, Evolution and Observational Signature of Diffused Antiworld

1998-10-15

arxiv.org/abs/astro-ph/9810228v1

Astropart.Phys.12:367-372,2000

Astronomy and Astrophysics

Astrophysics

9 pages

Scientific paper

10.1016/S0927-6505(99)00099-7

The existence of macroscopic regions with antibaryon excess in the baryon asymmetric Universe with general baryon excess is the possible consequence of practically all models of baryosynthesis. Diffusion of matter and antimatter to the border of antimatter domains defines the minimal scale of the antimatter domains surviving to the present time. A model of diffused antiworld is considered, in which the density within the surviving antimatter domains is too low to form gravitationally bound objects. The possibility to test this model by measurements of cosmic gamma ray fluxes is discussed. The expected gamma ray flux is found to be acceptable for modern cosmic gamma ray detectors and for those planned for the near future.

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