Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...158..135d&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 158, no. 1-2, April 1986, p. 135-142.
Astronomy and Astrophysics
Astrophysics
6
Background Radiation, Cosmology, Galactic Evolution, Relic Radiation, Universe, Annihilation Reactions, Gamma Rays, Interstellar Magnetic Fields, Ionization, Quasars, Temperature Distribution
Scientific paper
The presence of a void zone surrounding us, as found by Fliche, Souriau and Triay (1982) (FST) suggests a model of a spherical, closed and bipartitioned universe, one half matter, the other half anti-matter. Taking for granted the matter-antimatter bipartition, the physical consistency of the model is examined: (1) the high energy radiation in the neighborhood of the contact region between matter and antimatter produces an ionization excess which generates a lag in the decoupling, preventing galaxy formation. The thickness of the zone is compatible with the void zone of FST; (2) the distortion of the Cosmic Microwave Background, due to the annihilation is negligible; (3) the compatibility of the predicted gamma-ray flux with the observations requires the ad hoc hypothesis that the intergalactic matter in the void zone is present in clouds with a filling factor of the order of .01; and (4) in which case the Lyman-alpha absorption lines of the clouds show up only as a contribution to the Lyman-alpha forest. There is no evidence that the model of FST is physically inconsistent, but the general difficulties of any physical model of the void zone are underlined. Further observational data are needed.
Desert François Xavier
Schatzman Evry
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