Polarization of the Cosmic Microwave Background from Non-Uniform Reionization

Creators: Liu, Guo-Chin; Sugiyama, Naoshi; Benson, Andrew J.; Lacey, C. G.; Nusser, Adi

Others:: Cecchini, S.; Cortiglioni, S.; Sault, R.; Sbarra, C.

Abstract

The secondary anisotropies and polarization of the Cosmic Microwave Background (CMB) provide a laboratory for the study of the epoch of reionization in the Universe. Here, we concentrate on the CMB polarization in models with inhomogeneous reionization. Although the amplitude of the polarization anisotropy is estimated to be much smaller than that in the temperature, it is advantageous to consider the polarization signal since it is generated when photons and electrons scatter for the last time. Detection of these signals will place important constraints on the reionization history of the Universe.

Additional Information

© 2002 American Institute of Physics. Issue Date: 27 March 2002. We thank the Virgo Consortium for making available the GIF N-body simulations used here, and Shaun Cole, Carlos Frenk and Carlton Baugh for allowing us to use their model of galaxy formation. GCL thanks N. Seto for useful discussion. NS, AN and CGL acknowledge kind hospitality of Carlos Frenk and the physics department of University of Durham during the TMR network meeting. NS is supported by the Sumitomo fundation. CGL acknowledges support at SISSA from COFIN funds from MURST and from ASI. AN and AJB acknowledge the support of the EC RTN network "The Physics of the Intergalactic Medium".

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