Cosmic string induced CMB maps

Details Cosmic string induced CMB maps Cosmic string induced CMB maps

2010-04-16

arxiv.org/abs/1004.2885v2

Phys.Rev.D83:043516,2011

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

5 pages, 4 figures, submitted to PRD; v2: 6 pages, 5 figures, matches published version

Scientific paper

10.1103/PhysRevD.83.043516

We compute maps of CMB temperature fluctuations seeded by cosmic strings using high resolution simulations of cosmic strings in a Friedmann-Robertson-Walker universe. We create full-sky, 18-degree and 3-degree CMB maps, including the relevant string contribution at each resolution from before recombination to today. We extract the angular power spectrum from these maps, demonstrating the importance of recombination effects. We briefly discuss the probability density function of the pixel temperatures, their skewness and kurtosis.

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