Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-12-22
ApJL. 661, L1, 2007
Astronomy and Astrophysics
Astrophysics
9 pages, 3 figures. Revised for publication
Scientific paper
10.1086/518556
We introduce a new technique to detect the discrete temperature steps that cosmic strings might have left in the cosmic microwave background (CMB) anisotropy map. The technique provides a validity test on the pattern search of cosmic strings that could serve as the groundwork for future pattern searches. The detecting power of the technique is only constrained by two unavoidable features of CMB data: (1) the finite pixelization of the sky map and (2) the Gaussian fluctuation from instrumental noise and primordial anisotropy. We set the upper limit on the cosmic string parameter as $G\mu\lesssim 3.7\times 10^{-6}$ at the 95% confidence level (CL) and find that the amplitude of the temperature step has to be greater than $44\mu K$ in order to be detected for the {\it{Wilkinson Microwave Anisotropy Probe (WMAP)}} 3 year data.
Jeong E.
Smoot George F.
No associations
LandOfFree
The Validity of the Cosmic String Pattern Search with the Cosmic Microwave Background does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Validity of the Cosmic String Pattern Search with the Cosmic Microwave Background, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Validity of the Cosmic String Pattern Search with the Cosmic Microwave Background will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-379670