Search for Cosmic Strings in CMB Anisotropies

Details Search for Cosmic Strings in CMB Anisotropies Search for Cosmic Strings in CMB Anisotropies

2004-06-21

arxiv.org/abs/astro-ph/0406432v2

Astrophys.J. 624 (2005) 21-27

Astronomy and Astrophysics

Astrophysics

10 pages, 8 postscript figures

Scientific paper

10.1086/428921

We have searched the 1st-year WMAP W-Band CMB anisotropy map for evidence of cosmic strings. We have set a limit of $\delta = 8 \pi G \mu / c^2 < 8.2 \times 10^{-6}$ at 95% CL for statistical search for a significant number of strings in the map. We also have set a limit using the uniform distribution of strings model in the WMAP data with $\delta = 8 \pi G \mu / c^2 < 7.34 \times 10^{-5}$ at 95% CL. And the pattern search technique we developed here set a limit $\delta = 8 \pi G \mu / c^2 < 1.54 \times 10^{-5}$ at 95% CL.

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