Observing Gravitational Radiation with QSO Proper Motions and the SKA

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.

arXiv commentto appear in "Science with the Square Kilometer Array," eds. C. Carilli and S. Rawlings, New Astronomy Reviews (Elsevier: Amsterdam)

References in corpus (8)

• Gravitational Wave Experiments and Early Universe Cosmology
• Gravitational Waves Probe the Coalescence Rate of Massive Black Hole Binaries
• Quasar Proper Motions and Low-Frequency Gravitational Waves
• Gravitational Radiation and Very Long Baseline Interferometry
• The accretion history of the Universe with the SKA
• Bending of Light by Gravity Waves
• Observability of secondary Doppler peaks in the CMBR power spectrum by experiments with small fields
• Microarcsecond Astrometry using the SKA

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• Cosmological Constraints on the Very Low Frequency Gravitational-Wave Background
• All-sky analysis of astrochronometric signals induced by gravitational waves
• The Science of Fundamental Catalogs
• Astrometry meets Pulsar Timing Arrays: Synergies for Gravitational Wave Detection
• The impact of a stochastic gravitational-wave background on pulsar timing parameters
• First astrometric constraints on parity-violation in the gravitational wave background
• Algebraic symmetries of the observables on the sky: Variable emitters and observers
• A Parallelized Bayesian Approach To Accelerated Gravitational-Wave Background Characterization