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C. O'Dell (Univ. of Wisconsin-Madison), B. Keating (California Institute of Technology), P. Timbie (Univ. of Wisconsin-Madison)
While the temperature anisotropy power spectrum of the Cosmic Microwave Background (CMB) is being measured with ever-increasing accuracy, polarization in the CMB has yet to be seen. The CMB is expected to be polarized at a low level due to Thomson scattering at the time of recombination. CMB polarization encodes a wealth of information separate from that of temperature anisotropy, and is particularly sensitive to the duration of recombination as well as the redshift of reionization. In addition, a CMB polarization experiment can characterize the polarization of galactic foregrounds such as synchrotron radiation and dust emission.
The POLAR experiment is a ground-based correlation radiometer designed to see CMB polarization in the Ka-band (26-36 GHz) at large angular scales. In this paper, we will describe the POLAR experiment and report on recent observations made from Madison, Wisconsin in the spring of 2000.
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The author(s) of this abstract have provided an email address for comments about the abstract: odell@cmb.physics.wisc.edu