TOrsion-Bar Antenna: A Ground-Based Detector for Low-Frequency Gravity Gradient Measurement
Satoru Takano,
Tomofumi Shimoda,
Yuka Oshima,
Ching Pin Ooi,
Perry William Fox Forsyth,
Mengdi Cao,
Kentaro Komori,
Yuta Michimura,
Ryosuke Sugimoto,
Nobuki Kame,
Shingo Watada,
Takaaki Yokozawa,
Shinji Miyoki,
Tatsuki Washimi,
Masaki Ando
Affiliations
Satoru Takano
Department of Physics, The University of Tokyo, Bunkyo-ku, Tokyo 133-0033, Japan
Tomofumi Shimoda
Department of Physics, The University of Tokyo, Bunkyo-ku, Tokyo 133-0033, Japan
Yuka Oshima
Department of Physics, The University of Tokyo, Bunkyo-ku, Tokyo 133-0033, Japan
Ching Pin Ooi
Department of Physics, The University of Tokyo, Bunkyo-ku, Tokyo 133-0033, Japan
Perry William Fox Forsyth
Department of Physics, The University of Tokyo, Bunkyo-ku, Tokyo 133-0033, Japan
Mengdi Cao
Department of Astronomy, Beijing Normal University, Beijing 100875, China
Kentaro Komori
Department of Physics, The University of Tokyo, Bunkyo-ku, Tokyo 133-0033, Japan
Yuta Michimura
Research Center for the Early Universe (RESCEU), Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
Ryosuke Sugimoto
Department of Physics, The University of Tokyo, Bunkyo-ku, Tokyo 133-0033, Japan
Nobuki Kame
Earthquake Research Institute, The University of Tokyo, Bunkyo-ku, Tokyo 113-0032, Japan
Shingo Watada
Earthquake Research Institute, The University of Tokyo, Bunkyo-ku, Tokyo 113-0032, Japan
Takaaki Yokozawa
Institute for Cosmic Ray Research (ICRR), KAGRA Observatory, The University of Tokyo, Kashiwa 277-8582, Japan
Shinji Miyoki
Institute for Cosmic Ray Research (ICRR), KAGRA Observatory, The University of Tokyo, Kashiwa 277-8582, Japan
Tatsuki Washimi
Gravitational Wave Science Project (GWSP), Kamioka Branch, National Astronomical Observatory of Japan (NAOJ), Kamioka-cho, Hida City, Gifu 506-1205, Japan
Masaki Ando
Department of Physics, The University of Tokyo, Bunkyo-ku, Tokyo 133-0033, Japan
The Torsion-Bar Antenna (TOBA) is a torsion pendulum-based gravitational detector developed to observe gravitational waves in frequencies between 1 mHz and 10 Hz. The low resonant frequency of the torsion pendulum enables observation in this frequency band on the ground. The final target of TOBA is to observe gravitational waves with a 10 m detector and expand the observation band of gravitational waves. In this paper, an overview of TOBA, including the previous prototype experiments and the current ongoing development, is presented.
