Detecting gravitational waves with light

Abstract

The strong evidence for low-frequency gravitational waves from pulsar timing arrays (PTAs), published in 2023, has widened the scope for teaching about gravitational wave astronomy. This article provides a simple, unified overview of the detection of gravitational waves using light waves that encompasses the recent PTA detections, the by-now classic interferometric detections using LIGO and similar detectors, and the yet-to-be-accomplished detections using long-arm detectors like the spaceborne LISA. The presentation is at a level accessible for undergraduate students. The influence of gravitational waves on light is derived in a way that makes use only of basic gravitational wave properties and Einstein's equivalence principle.

arXiv comment13 pages, 7 figures

References in corpus (22)

• Advanced LIGO
• Search for an isotropic gravitational-wave background with the Parkes Pulsar Timing Array
• Searching for the nano-Hertz stochastic gravitational wave background with the Chinese Pulsar Timing Array Data Release I
• The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals
• The NANOGrav 15-year Data Set: Observations and Timing of 68 Millisecond Pulsars
• Timing stability of millisecond pulsars and prospects for gravitational-wave detection
• Gravitational wave astronomy of single sources with a pulsar timing array
• Time-Delay Interferometry
• Laser Interferometric Detectors of Gravitational Waves
• The response of interferometric gravitational wave detectors
• Answers to frequently asked questions about the pulsar timing array Hellings and Downs curve
• Can a short intervention focused on gravitational waves and quantum physics improve students' understanding and attitude?
• Gravitational wave detector response in terms of spacetime Riemann curvature
• Gravitational-wave Science in the High School Classroom
• Searching for gravitational waves via Doppler tracking by future missions to Uranus and Neptune
• Gravitational waves physics using Fermi coordinates: a new teaching perspective
• A common misconception about LIGO detectors of gravitational waves
• A graphical description of optical parametric generation of squeezed states of light
• The response of laser interferometers to a gravitational wave
• Detection principle of gravitational wave detectors
• Influence of gravitational waves upon light in the Minkowski background: from null geodesics to interferometry
• Gravitational Wave Timing Residual Models for Pulsar Timing Experiments