Scars on the Cosmic Background Radiation?

Details Scars on the Cosmic Background Radiation? Scars on the Cosmic Background Radiation?

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...496l..63c&link_type=abstract

Astrophysical Journal Letters v.496, p.L63

Astronomy and Astrophysics

Astronomy

3

Cosmology: Cosmic Microwave Background, Cosmology: Miscellaneous, Nuclear Reactions, Nucleosynthesis, Abundances, Radiation Mechanisms: Nonthermal

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 postrecombination matter-antimatter contact near regional boundaries leads to an observable (but unobserved) gamma-ray flux for domain sizes of less than a few thousand megaparsecs, thereby excluding such domains. In this Letter, we consider the prerecombination signal from domains of larger size.

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