PIRSA:25100042

Video URL

https://pirsa.org/25100042

Pulsar Timing Arrays: a new window into the gravitational-wave sky

Sato-Polito, G. (2025). Pulsar Timing Arrays: a new window into the gravitational-wave sky. Perimeter Institute for Theoretical Physics. https://pirsa.org/25100042

Sato-Polito, Gabriela. Pulsar Timing Arrays: a new window into the gravitational-wave sky. Perimeter Institute for Theoretical Physics, Oct. 01, 2025, https://pirsa.org/25100042 

          @misc{ scivideos_PIRSA:25100042,
            doi = {10.48660/25100042},
            url = {https://pirsa.org/25100042},
            author = {Sato-Polito, Gabriela},
            keywords = {Other Physics},
            language = {en},
            title = {Pulsar Timing Arrays: a new window into the gravitational-wave sky},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2025},
            month = {oct},
            note = {PIRSA:25100042 see, \url{https://scivideos.org/pirsa/25100042}}
          }

Gabriela Sato-Polito Institute for Advanced Study (IAS) - School of Natural Sciences (SNS)

Talk numberPIRSA:25100042
DOI10.48660/25100042
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

Pulsar timing arrays (PTAs) consist of a set of regularly monitored millisecond pulsars with extremely stable rotational periods that are used as precise cosmic clocks. The arrival time of pulses can be altered by the passage of gravitational waves (GWs) between them and the Earth, thus serving as a galaxy-wide GW detector. Evidence for low-frequency (~nHz) gravitational waves has recently been reported for the first time across multiple PTA collaborations, opening a new observational window into the Universe. I will discuss how pulsar observations are used to measure GWs, what we are currently learning by mapping the nanohertz GW sky, and what lies ahead following a first detection.