Gaia quasar proper motions give a Solar System acceleration amplitude of 5.72 μas yr^{-1} with vector components (0.40, -5.09, -2.40), consistent with prior work but with 1.5-2.5 times larger credible intervals after marginalizing higher multipoles.
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Observing the Peculiar Acceleration of our Solar System with Quasar Proper Motions
Gaia quasar proper motions give a Solar System acceleration amplitude of 5.72 μas yr^{-1} with vector components (0.40, -5.09, -2.40), consistent with prior work but with 1.5-2.5 times larger credible intervals after marginalizing higher multipoles.