Probing the Early Universe with Spider: a CMB Polarimeter

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• Caroline Clark (Imperial College)
• Monday 13 June 2011, 13:00-14:00
• CMS, Pav.B, CTC Common Room (B1.19).

If you have a question about this talk, please contact Tasos Avgoustidis.

Upcoming CMB experiments face a major challenge in the search for B-mode polarisation, due to both its weak signal and the potential for Galactic foregrounds to contaminate observations. B-modes can only be generated by tensor modes, thus their detection would provide evidence for Primordial Gravitational Waves.

I will describe Spider, an experiment that will map a large fraction of the sky with degree-scale resolution. I will outline an algorithm we have developed for massively multi-detector, polarised map-making. I will also present a three-dimensional model of the Galactic magnetic field and dust density, which is used to generate full-sky foreground templates of Galactic foreground emission.

This talk is part of the Cosmology Lunch series.

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