2009

Improved measurements of the temperature and polarization of the CMB from QUaD

The QUaD collaboration, Brown, M. L., Ade, P. et al.

Understand

We present an improved analysis of the final dataset from the QUaD experiment.

Using an improved technique to remove ground contamination, we double the effective sky area and hence increase the precision of our CMB power spectrum measurements by ~30% versus that previously reported.
In addition, we have improved our modeling of the instrument beams and have reduced our absolute calibration uncertainty from 5% to 3.5% in temperature.
The robustness of our results is confirmed through extensive jackknife tests and by way of the agreement we find between our two fully independent analysis pipelines.

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