The nature of the E-B decomposition of CMB polarization

Details The nature of the E-B decomposition of CMB polarization The nature of the E-B decomposition of CMB polarization

2001-06-10

arxiv.org/abs/astro-ph/0106174v1

Phys.Rev. D64 (2001) 103001

Astronomy and Astrophysics

Astrophysics

8 pages, 8 figures

Scientific paper

10.1103/PhysRevD.64.103001

We present a derivation of the transformation between the Q and U Stokes parameters and the E and B scalar and pseudo-scalar fields. We emphasize the geometrical properties that such transformation must satisfy. We present the E and B decomposition 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.

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