Noise Subtraction of KAGRA Data

Chia-Jui Chou^1*, Yi Yang¹, Shu-Wei Yeh², Chih-Yi Chang³, Nim-Ki Wong⁴

¹School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
²Department of Physics, National Tsing Hua University, Hsinchu, Taiwan
³Institue of Astronomy, Natioanl Tsing Hua University, Hsinchu, Taiwan
⁴Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, Taiwan

* Presenter:Chia-Jui Chou, email:zhoujr@shanghaitech.edu.cn

KAGRA joins the O4a observation with sensitivity around 1 Mpc and the O4c observation around 6 to 7 Mpc. We investigate the background noise and the auxiliary channels of KAGRA to define the subtraction problems to apply the offline noise subtraction on KAGRA data. Then we evaluate the improvement on sensitivity and evaluate the performance of detecting gravitational wave signals using KAGRA data.

Keywords: Gravitational Wave, KAGRA, Noise Subtraction