Signals of primordial phase transitions on CMB maps

Details Signals of primordial phase transitions on CMB maps Signals of primordial phase transitions on CMB maps

2001-03-12

arxiv.org/abs/astro-ph/0103173v1

Astronomy and Astrophysics

Astrophysics

2 pages, submitted to Proceedings of 9th Marcel Grossmann meeting

Scientific paper

The analysis of the CMB anisotropies is a rich source of cosmological informations. In our study, we simulated the signals produced by the relics of a first order phase transition occured during an inflationary epoch in the early Universe. These relics are bubbles of true vacuum that leave a characteristic non-Gaussian imprint on the CMB. We use different statistical estimators in order to evaluate this non-Gaussianity. We obtain some limits on the allowed values of the bubble parameters comparing our results with the experimental data. We also predict the possibility to detect this signal with the next high resolution experiments.

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