Authors: Takeshi Chiba, Yoshiaki Himemoto, Masahide Yamaguchi, Jun'ichi Yokoyama Date: 21 May 2007 Abstract: We calculate the signal-to-noise ratio (SNR) of the stochastic gravitational wave background with its amplitude close to the detection threshold in an extreme case its spectrum has a sharp fall off which mimics the imprint of the change of the number of relativistic degrees of freedom on the stochastic background generated during inflation in the early universe. While it is true that SNR is maximal in the case we use the correct template proportional to the assumed spectrum, it is fairly insensitive to the shape of the template we use, indicating that a simple power-law template is sufficient to detect the signature. |
0705.2851
(/preprints)
2007-05-21, 18:03
[edit]