Clearing our Dust, Looking back to the Big Bang

Details Clearing our Dust, Looking back to the Big Bang Clearing our Dust, Looking back to the Big Bang

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006noao.prop..355s&link_type=abstract

NOAO Proposal ID #2006A-0355

Physics

Scientific paper

Observations of the polarized microwave background fluctuations with WMAP have confirmed basic inflationary theory, tested the physics of recombination, and provided the first signature of early star formation. The WMAP high frequency data are limited mainly by galactic foreground polarization, not by instrumental sensitivity. We therefore propose to use the Magalhaes polarimeter to measure the galactic interstellar polarization to 1000 bright halo stars selected from the NASA Space Interferometry Mission (SIM) grid star sample, and estimate that we can reduce this foreground polarization contamination by about 75%, effectively doubling the WMAP data sensitivity to gravity waves and improving its measurements of early star formation. For Planck's higher frequency data (up to 900 GHz) this is even more important.

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