Removing beam asymmetry bias in precision cmb temperature and polarization experiments

@inproceedings{Wallis2014RemovingBA,
  title={Removing beam asymmetry bias in precision cmb temperature and polarization experiments},
  author={Christopher G. R. Wallis and Michael Brown and Richard A. Battye and Giampaolo Pisano and Luca Lamagna},
  year={2014}
}
  • Christopher G. R. Wallis, Michael Brown, +2 authors Luca Lamagna
  • Published 2014
  • Physics
  • Asymmetric beams can create significant bias in estimates of the power spectra from cosmic microwave background (CMB) experiments. With the temperature power spectrum many orders of magnitude stronger than the B-mode power spectrum, any systematic error that couples the two must be carefully controlled and/or removed. Here, we derive unbiased estimators for the CMB temperature and polarization power spectra taking into account general beams and general scan strategies. A simple consequence of… CONTINUE READING

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