CMB Polarization due to Scattering in Clusters

Details CMB Polarization due to Scattering in Clusters CMB Polarization due to Scattering in Clusters

2006-02-24

arxiv.org/abs/astro-ph/0602528v1

Mon.Not.Roy.Astron.Soc.368:511-517,2006

Astronomy and Astrophysics

Astrophysics

8 pages, 9 figures. accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2006.10212.x

Scattering of the cosmic microwave background (CMB) in clusters of galaxies polarizes the radiation. We explore several polarization components which have their origin in the kinematic quadrupole moments induced by the motion of the scattering electrons, either directed or random. Polarization levels and patterns are determined in a cluster simulated by the hydrodynamical Enzo code. We find that polarization signals can be as high as $\sim 1 \mu$K, a level that may be detectable by upcoming CMB experiments.

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