Observing Gravitational Radiation with QSO Proper Motions and the SKA

Details Observing Gravitational Radiation with QSO Proper Motions and the SKA Observing Gravitational Radiation with QSO Proper Motions and the SKA

2004-09-27

arxiv.org/abs/astro-ph/0409637v1

New Astron.Rev. 48 (2004) 1483-1485

Astronomy and Astrophysics

Astrophysics

to appear in "Science with the Square Kilometer Array," eds. C. Carilli and S. Rawlings, New Astronomy Reviews (Elsevier: Amst

Scientific paper

10.1016/j.newar.2004.09.018

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.

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