First attempt at measuring the CMB cross-polarization

  title={First attempt at measuring the CMB cross-polarization},
  author={Angelica de Oliveira-Costa and Max Tegmark and Matias Zaldarriaga and D. Barkats and Joshua Ott Gundersen and Matthew M. Hedman and Suzanne Staggs and Bruce D. Winstein},
  journal={Physical Review D},
We compute upper limits on CMB cross-polarization by cross-correlating the PIQUE and Saskatoon experiments. We also discuss theoretical and practical issues relevant to measuring cross-polarization and illustrate them with simulations of the upcoming BOOMERanG 2002 experiment. We present a method that separates all six polarization power spectra (TT, EE, BB, TE, TB, EB) without any other "leakage" than the familiar EE-BB mixing caused by incomplete sky coverage. Since E and B get mixed, one… 
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