Scars on the CBR?

Details Scars on the CBR? Scars on the CBR?

1997-09-14

arxiv.org/abs/astro-ph/9709132v1

Astronomy and Astrophysics

Astrophysics

6 pages, latex

Scientific paper

We ask whether the universe can be a patchwork consisting of distinct regions of matter and antimatter. In previous work we demonstrated that post-recombination matter-antimatter contact near regional boundaries leads to an observable (but unobserved) gamma-ray flux for domain sizes of less than a few thousand Mpc, thereby excluding such domains. In this paper we consider the pre-recombination signal from domains of larger size.

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