Phenomenology of Medium-Scale CMB Anisotropy

Details Phenomenology of Medium-Scale CMB Anisotropy Phenomenology of Medium-Scale CMB Anisotropy

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.5703k&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #57.03; Bulletin of the American Astronomical Society, Vol. 26, p.1409

Astronomy and Astrophysics

Astronomy

Scientific paper

We use simulated maps of the cosmic microwave background (CMB) generated with a cold dark matter model to investigate the phenomenology of differential scans at instrumental resolution 0{{rlap .}(deg}5) to 1{{rlap .}(deg}5) . Contrary to expectation, high-contrast peaks (``point sources'') are a common feature; the recent MSAM detection of a Planck-spectrum unresolved source is in good agreement with standard CDM. We investigate the statistical properties of simulated maps as a function of sky coverage, angular resolution, and instrument noise. The sensitivity to the Doppler peak depends primarily on the fraction of the sky covered and only secondarily upon the angular resolution and noise level.

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