Cold Dark Matter and Degree-Scale Cosmic Microwave Background Anisotropy Statistics after COBE
Abstract
We conduct a Monte Carlo simulation of the cosmic microwave background (CMB) anisotropy in the UCSB South Pole 1991 degree-scale experiment. We examine cold dark matter cosmology with large-scale structure seeded by the Harrison-Zel'dovich hierarchy of Gaussian-distributed primordial inhomogeneities normalized to the COBE-DMR measurement of large-angle CMB anisotropy. We find it statistically implausible (in the sense of low cumulative probability F lower than 5 percent, of not measuring a cosmological delta-T/T signal) that the degree-scale cosmological CMB anisotropy predicted in such models could have escaped a detection at the level of sensitivity achieved in the South Pole 1991 experiment.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- June 1993
- DOI:
- 10.1086/186865
- Bibcode:
- 1993ApJ...410L...1G
- Keywords:
-
- Anisotropy;
- Cosmic Background Explorer Satellite;
- Dark Matter;
- Radiation Distribution;
- Relic Radiation;
- Astronomical Models;
- Big Bang Cosmology;
- Microwave Radiometers;
- Monte Carlo Method;
- Space Radiation;
- COSMOLOGY: COSMIC MICROWAVE BACKGROUND