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arXiv · 1206.5035

Detecting candidate cosmic bubble collisions with optimal filters

J. D. McEwen·S. M. Feeney·M. C. Johnson·H. V. Peiris
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Abstract

We review an optimal-filter-based algorithm for detecting candidate sources of unknown and differing size embedded in a stochastic background, and its application to detecting candidate cosmic bubble collision signatures in Wilkinson Microwave Anisotropy Probe (WMAP) 7-year observations. The algorithm provides an enhancement in sensitivity over previous methods by a factor of approximately two. Moreover, it is optimal in the sense that no other filter-based approach can provide a superior enhancement of these signatures. Applying this algorithm to WMAP 7-year observations, eight new candidate bubble collision signatures are detected for follow-up analysis.

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J. D. McEwen, S. M. Feeney, M. C. Johnson, H. V. Peiris. 2012-06-22. Detecting candidate cosmic bubble collisions with optimal filters. https://arxiv.org/abs/1206.5035

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