Cosmic string induced CMB maps

Journal Article · Mon Feb 14 23:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.043516· OSTI ID:21511323

Landriau, M ^[1]; Shellard, E P. S. ^[2]

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1. Max-Planck-Institut fuer extraterrestrische Physik, Giessenbachstrasse 1, 85748 Garching (Germany)
2. Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Centre for Mathematical Sciences, Wilberforce Road, Cambridge CB3 0WA (United Kingdom)

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 deg. and 3 deg. 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.

• OSTI ID: 21511323
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 4 Vol. 83; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTRONOMY AND ASTROPHYSICS
ASYMMETRY
COMPOSITE MODELS
COMPUTERIZED SIMULATION
DISTRIBUTION
ELECTROMAGNETIC RADIATION
EXTENDED PARTICLE MODEL
FLUCTUATIONS
FUNCTIONS
MATHEMATICAL MODELS
MATHEMATICS
MICROWAVE RADIATION
PARTICLE MODELS
PROBABILITY DENSITY FUNCTIONS
QUARK MODEL
RADIATIONS
RECOMBINATION
RELICT RADIATION
RESOLUTION
SIMULATION
SPECTRA
STATISTICS
STRING MODELS
UNIVERSE
VARIATIONS