Detecting relic gravitational waves in the CMB: A statistical bias
Niels Bohr Institute, Copenhagen University, Blegdamsvej 17, Copenhagen, 2100, Denmark
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Revised: 28 June 2011
Published online: 26 July 2011
Analyzing the imprint of relic gravitational waves (RGWs) on the cosmic microwave background (CMB) power spectra provides a way to determine the signal of RGWs. In this Letter, we discuss a statistical bias, which could exist in the data analysis and has the tendency to overlook the RGWs. We also explain why this bias exists, and how to avoid it.
© Springer-Verlag / Società Italiana di Fisica, 2011