Torsion-bar antenna: a ground-based mid-frequency and low-frequency gravitational wave detector

Understand

Expanding the observational frequency of gravitational waves is important for the future of astronomy.

• Torsion-Bar Antenna (TOBA) is a mid-frequency and low-frequency gravitational wave detector using a torsion pendulum.
• The low resonant frequency of the rotational mode of the torsion pendulum enables ground-based observations.
• The overview of TOBA, including the past and present status of the prototype development is summarized in this paper.