Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...441l...1h&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 441, no. 1, p. L1-L4
Astronomy and Astrophysics
Astronomy
19
Astronomical Models, Background Radiation, Big Bang Cosmology, Cosmic Rays, Dark Matter, Density Distribution, Microwaves, Power Spectra, Stochastic Processes, Angular Resolution, Anisotropy, Computerized Simulation, Correlation, Doppler Effect, Sky Surveys (Astronomy), White Noise
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 deg and 1.0 deg 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 of the simulated maps are presented to illustrate the anisotropies.
Bennett Charles L.
Hinshaw Gary
Kogut Alan
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