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

TL;DR

This paper discusses the Torsion-Bar Antenna (TOBA), a ground-based gravitational wave detector designed to observe mid- and low-frequency gravitational waves using a torsion pendulum, highlighting its development status.

Contribution

It provides an overview of TOBA's design, development, and current status, emphasizing its potential for ground-based gravitational wave detection at low frequencies.

Findings

Prototype development progress summarized

Feasibility of low-frequency detection demonstrated

Potential for future gravitational wave astronomy

Abstract

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.