Anisotropies of the cosmic background radiation by domain wall networks

Details Anisotropies of the cosmic background radiation by domain wall networks Anisotropies of the cosmic background radiation by domain wall networks

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...373l..35n&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 373, June 1, 1991, p. L35-L37.

Statistics

Computation

5

Anisotropy, Background Radiation, Cosmology, Domain Wall, Relic Radiation, Astronomical Models, Computational Astrophysics, Density Distribution, Phase Transformations

Scientific paper

This paper discusses cosmological effects by domain wall formation associated with a late time phase transition after decoupling. Assuming the existence of rigid domain wall networks, a simple one-dimensional model is constructed and the quadrupole anisotropy of the cosmic background radiation (CBR) is calculated. Contrary to expectation, the gravitational potential of a domain wall itself does not disturb the isotropy of CBR. Estimating the quadrupole anisotropy of CBR induced by the wall-driven growth of matter density perturbations, a 100/h Mpc periodic wall structure is found to be consistent with the observed upper bound.

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