Detecting nanohertz gravitational waves with pulsar timing arrays

TL;DR

This paper reviews pulsar timing array experiments that use high-precision radio telescope data collected over a decade to search for nanohertz gravitational waves, highlighting recent advances and results.

Contribution

It provides an overview of pulsar timing experiments, detection methods, and recent findings in the search for nanohertz gravitational waves.

Findings

High-precision timing data collected over 10 years

Detection of potential gravitational wave signals

Advancements in pulsar timing array sensitivity

Abstract

Complementary to ground-based laser interferometers, pulsar timing array experiments are being carried out to search for nanohertz gravitational waves. Using the world's most powerful radio telescopes, three major international collaborations have collected $\sim$10-year high precision timing data for tens of millisecond pulsars. In this paper we give an overview on pulsar timing experiments, gravitational wave detection in the nanohertz regime, and recent results obtained by various timing array projects.