期刊
NEW ASTRONOMY REVIEWS
卷 47, 期 11-12, 页码 995-1000出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.newar.2003.09.020
关键词
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We describe a fast, quadratic power spectrum estimator for cosmic microwave background polarization fields, based on heuristically-weighted correlation functions. The method can handle real-world effects such as inhomogeneous or correlated noise, and arbitrary sky cuts. A significant feature is that the electric and magnetic polarization powers are separated exactly in the mean, even for observations covering only a small region of the sky, and with a negligible increase in computational cost. The method is illustrated with simulations for a large-area survey, and a future, deep magnetic-polarization survey. (C) 2003 Elsevier B.V. All rights reserved.
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