Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1780066 | New Astronomy Reviews | 2006 | 5 Pages |
Abstract
Fast heuristically weighted, or pseudo-Câ, estimators are a frequently used method for estimating power spectra in CMB surveys with large numbers of pixels. Recently, Challinor and Chon showed that the E-B mixing in these estimators can become a dominant contaminant at low noise levels, ultimately limiting the gravity wave signal which can be detected on a finite patch of sky. We define a modified version of the estimators which eliminates E-B mixing and is near-optimal at all noise levels.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Astronomy and Astrophysics
Authors
Kendrick M. Smith,