Nature of thedecomposition of CMB polarization
- 3 October 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 64 (10) , 103001
- https://doi.org/10.1103/physrevd.64.103001
Abstract
We present a derivation of the transformation between the Q and U Stokes parameters and the E and B scalar and pseudoscalar fields. We emphasize the geometrical properties that such transformation must satisfy. We present the E and B decompositions of some simple maps and of a model for a supernova remnant. We discuss the relative amplitudes of the E and B components, and argue that for generic random maps E and B should have roughly the same amplitudes.Keywords
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