Anisotropies of the cosmic background radiation by domain wall networks

Yasusada Nambu, Hideki Ishihara, Naoteru Gouda, Naoshi Sugiyama

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


We discuss cosmological effects by domain wall formation associated with a late time phase transition after decoupling. Assuming the existence of rigid domain wall networks, we construct a simple one-dimensional model and calculate the quadrupole anisotropy of the cosmic background radiation (CBR). Contrary to one's naive 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 100h-1 Mpc periodic wall structure is found to be consistent with the observed upper bound.

Original languageEnglish
Pages (from-to)L35-L37
JournalAstrophysical Journal
Issue number2 PART 2
Publication statusPublished - Jun 1 1991
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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