GW1 - Sources of Gravitational Waves |
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Speaker |
Ito, Asuka |
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Coauthors |
Toshifumi, Noumi; Jiro, Soda; Makoto, Tsuneto |
| Talk Title |
A strategy for detecting the bispectrum of stochastic gravitational waves |
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Abstract |
Bispectra of primordial gravitational waves is one of the keys to probe the early universe which contain information beyond standard model. In this talk, I give a method to detect bispectra of stochastic gravitational waves. In general, bispectra form a momentum triangle because of homogeneity of the universe. I show that an optimal filter function enables us to extract a specific configuration of the momentum triangle from the correlation of the signals. Applying this method to pulsar timing array gravitational wave detector, I argue about the dependance of positions of three pulsars to the sensitivity, which is called overlap reduction function in the case of power spectra. Our result suggests the optimal positions of pulsars to detect the bispectrum forming a momentum triangle. This study is in preparation to submit and will be published until MG15. |
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