Detecting candidate cosmic bubble collisions with optimal filters
Cosmology and Nongalactic Astrophysics
2012-06-25 v1 Instrumentation and Methods for Astrophysics
High Energy Physics - Theory
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.
Keywords
Cite
@article{arxiv.1206.5035,
title = {Detecting candidate cosmic bubble collisions with optimal filters},
author = {J. D. McEwen and S. M. Feeney and M. C. Johnson and H. V. Peiris},
journal= {arXiv preprint arXiv:1206.5035},
year = {2012}
}
Comments
4 pages, 2 figures, Proceedings of 47th Rencontres de Moriond