The Lunar Gravitational-wave Antenna: Mission Studies and Science Case

LGWA is a proposed array of next-generation inertial sensors on the Moon to measure lunar motion induced by gravitational waves. With sensitivity spanning roughly 1 mHz to 1 Hz, it would bridge the gap between space-based detectors such as LISA and future ground-based observatories like Einstein Telescope or Cosmic Explorer. The paper lays out the mission concept and a comprehensive science case, including multimessenger opportunities and lunar-geophysics science enabled by the same data, and summarizes lunar characterization studies needed to plan the mission.

JCAP 01 (2025) 108