演講資訊

摘要：

The discovery of Gravitational Wave (GW) marked an opening of a new era of GW astronomy. Exploring the new physics under the extreme gravity condition and eventually challenge the general rerativity in high precision, accurate calibration of the GW form is essential. Our group work on KAGRA, which employs 3km-scale interferometer with the cryogenic and low seismic noise technology that will be used in next-generation experiments. We expect to solve the degeneracies of parameters with world wide observation, and in particular, the polarization of GWs. Joint LIGO-Virgo-KAGRA (LVK) observations from 2019 will put us on the frontiers of GW astronomy and cosmology. We are developing the photon calibrator and gravity field calibrator for KAGRA, which can modulate the mirror surface with photon pressure and Gravity field. Thanks to this technology, we can reach the precision of amplitude and phase of the gravitational wave to 1% and 1 degree, respectively. In this talk, we report the progress of the KAGRA calibration and activity of our group.