CMB Maps at 0.5 degree Resolution I: Full-Sky Simulations and Basic Results

Details CMB Maps at 0.5 degree Resolution I: Full-Sky Simulations and Basic Results CMB Maps at 0.5 degree Resolution I: Full-Sky Simulations and Basic Results

1994-08-12

arxiv.org/abs/astro-ph/9408037v1

Astronomy and Astrophysics

Astrophysics

13 pages with 3 figures and 1 color plate available on request, uuencoded Postscript

Scientific paper

We have simulated full-sky maps of the Cosmic Microwave Background (CMB) anisotropy expected from Cold Dark Matter (CDM) models at 0.5 and 1.0 degree angular resolution. Statistical properties of the maps are presented as a function of sky coverage, angular resolution, and instrument noise, and the implications of these results for observability of the Doppler peak are discussed. The rms fluctuations in a map are not a particularly robust probe of the existence of a Doppler peak, however, a full correlation analysis can provide reasonable sensitivity. We find that sensitivity to the Doppler peak depends primarily on the fraction of sky covered, and only secondarily on the angular resolution and noise level. Color plates and one-dimensional scans of the maps are presented to visually illustrate the anisotropies.

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