Astrometric Search Method for Individually Resolvable Gravitational Wave Sources with Gaia.Gravitational waves (GWs) cause the apparent position of distant stars to oscillate with a characteristic pattern on the sky.  Astrometric measurements (e.g., those made by Gaia) provide a new way to search for GWs.  The main difficulty facing such a search is the large size of the data set; Gaia observes more than one billion stars.  This technique was successfully used to recover artificially injected GW signals from mock Gaia data and to assess the GW sensitivity of Gaia.  Throughout the Letter the complementarity of Gaia and pulsar timing searches for GWs is highlighted.
Gaia
Astrometric Search Method for Individually Resolvable Gravitational Wave Sources with Gaia.Gravitational waves (GWs) cause the apparent position of distant stars to oscillate with a characteristic pattern on the sky.  Astrometric measurements (e.g., those made by Gaia) provide a new way to search for GWs.  The main difficulty facing such a search is the large size of the data set; Gaia observes more than one billion stars.  This technique was successfully used to recover artificially injected GW signals from mock Gaia data and to assess the GW sensitivity of Gaia.  Throughout the Letter the complementarity of Gaia and pulsar timing searches for GWs is highlighted.
Gaia