The correlation of peaks in the microwave background

Details The correlation of peaks in the microwave background The correlation of peaks in the microwave background

1999-04-22

arxiv.org/abs/astro-ph/9904307v1

Astronomy and Astrophysics

Astrophysics

8 pages, 5 postscript figures, submitted to MNRAS

Scientific paper

10.1046/j.1365-8711.1999.03015.x

We present accurate predictions of the correlation function of hotspots in the microwave background radiation for gaussian theories such as those predicted in most inflation models. The correlation function of peaks above a certain threshold depends only on the threshold and the power spectrum of temperature fluctuations. Since there are both potentially observable quantities in a microwave background map, there are no adjustable parameters in the predictions. These correlations should therefore provide a powerful test of the gaussian hypothesis, and provide a useful discriminant between inflation and topological defect models such as the cosmic string model. The correlations have a number of oscillatory features, which should be detectable at high signal-to-noise with future satellite experiments such as MAP and Planck.

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