Observing Gravitational Radiation with QSO Proper Motions and the SKA
arXiv:astro-ph/0409637 · doi:10.1016/j.newar.2004.09.018
Abstract
We discuss the ability of the SKA to observe QSO proper motions induced by long-wavelength gravitational radiation. We find that the SKA, configured for VLBI with multiple beams at high frequency (8 GHz), is sensitive to a dimensionless characteristic strain of roughly $10^{-13}$, comparable to (and with very different errors than) other methods in the 1/yr frequency band such as pulsar timing.
to appear in "Science with the Square Kilometer Array," eds. C. Carilli and S. Rawlings, New Astronomy Reviews (Elsevier: Amsterdam)