CMB anisotropy at 0°.5 angular scale II. Analysis of peaks

Details CMB anisotropy at 0°.5 angular scale II. Analysis of peaks CMB anisotropy at 0°.5 angular scale II. Analysis of peaks

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aipc..336..489k&link_type=abstract

Dark matter. AIP Conference Proceedings, Volume 336, pp. 489-492 (1995).

Computer Science

Dark Matter, Background Radiations

Scientific paper

The recent MSAM detection of unresolved features in the CMB at 0°.5 angular resolution (Cheng et al. 1994) has been interpreted by some authors as possible evidence for a new population of mm-bright objects or as a signature of non-Gaussian processes in the CMB. We have simulated CMB maps using COBE-normalized cold dark matter (CDM) models and searched the resulting maps for features at 0°.5 to 1°.5 resolution. Contrary to expectation, the detection of isolated unresolved features (``point sources'') is common in CDM models. We derive the number density of fitted peaks and compare the results to recent observations. The MSAM ``sources'' are in agreement with standard CDM (n=1, h=0.5, Ωb=0.05) and are not necessarily evidence for processes beyond the standard model.

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