https://doi.org/10.1140/epjc/s10052-011-1706-2
Letter
Detecting relic gravitational waves in the CMB: A statistical bias
Niels Bohr Institute, Copenhagen University, Blegdamsvej 17, Copenhagen, 2100, Denmark
* e-mail: wzhao7@mail.ustc.edu.cn
Received:
21
April
2011
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