National Central University

Research overview

Precise observations of gravitational waves are one of the significant studies for cosmological and astrophysical science. The worldwide observation between Unite Stats, Europe and Asia has just begun since 2020 April. The joint observations of LIGO, Virgo, KAGRA are expected to find next discoveries for fundamental physics. To observe the gravitational wave precisely, the improvement of the calibration is one of the significant parts. This is because that the calibration uncertainty directly propagates to the parameter of the gravitational wave source. Therefore, the improvement of calibration method is essential for next observation.

Our group will establish the next-generation calibration system and reconstruction method. These approaches are unique and have good synergies with the collaboration of PIs in this joint proposal. In particular, the cosmological approaches are one of the most important studies in next-generation gravitational wave observation. In next observation, we can solve the degeneracy of polarization with combined analysis of all GW detectors. A polarization of GW gives us the information of luminosity distance by solving the degeneracy of inclination angle of sources.

Research topics

• Calibration and Reconstruction of KAGRA
• Future R&D of Gravitational wave science
• Exotic science with Gravitational Wave detector
• Experimental Cosmology