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Improved distance measurements to millisecond pulsars can enhance pulsartiming array (PTA) sensitivity to gravitational-waves, improve tests of generalrelativity with binary pulsars, improve constraints on fuzzy dark matter, andmore. Here we report the parallax and distance measurements to seven Gaia DR2objects associated with seven International PTA pulsars: J0437-4715,J1012+5307, J1024-0719, J1732-5049, J1910+1256, J1843-1113, and J1949+3106. Bymultiplying the posteriors of the PTA-based parallax measurements with the Gaiaparallax measurement to the pulsar's companion, we improve the distancemeasurements from a few percent to a factor of five, and a tentative detectionof a binary companion to J1843-1113. We also find an order of magnitudeimprovement in the parallax measurement to J1949+3106.

Improving Binary Millisecond Pulsar Distances with Gaia