Testing Relativistic Gravity and Detecting Gravitational Waves in Space

TL;DR

This paper reviews space mission methods using laser ranging and drag-free technology to test relativistic gravity and detect gravitational waves, emphasizing the importance of space environment and advanced measurement techniques.

Contribution

It provides an overview of current and proposed space missions employing laser and drag-free technologies for gravity testing and gravitational wave detection.

Findings

Deep-space laser ranging enhances measurement sensitivity.

Drag-free technology minimizes spurious noises in measurements.

Various missions aim to test relativistic gravity and detect gravitational waves.

Abstract

For testing gravity and detecting gravitational waves in space, deep-space laser ranging using drag-free spacecraft is a common method. Deep space provides a large arena and a long integration time. Laser technology provides measurement sensitivity, while drag-free technology ensures that gravitational phenomenon to be measured with least spurious noises. In this talk, we give an overview of motivations and methods of various space missions/proposals testing relativistic gravity and detecting gravitational waves, and refer to various references.