http://arxiv.org/abs/2210.10816
We have identified 7 objects in Gaia Early DR3 associated with 6 International Pulsar Timing Array (PTA) pulsars. We combine both pulsar timing based parallax distance measurements with Gaia parallaxes to their companions, in an effort to improve distance measurements. We confirm previous cross-match findings for pulsars J0437-4715, J1012+5307, J1024-0719, J1732-5049, and J1843-1113. We no longer find the companion to J1949+3106 even though it was detected with a $> 3\sigma$ confidence in Gaia DR2. It is therefore likely that any definite cross-match must be made with $>3\sigma$ confidence, casting further doubt on companion identified with J1843-1113. We also report a low signal-to-noise detection of two candidates matched with J1747-4036 which we will continue to monitor. Encouragingly, the average signal-to-noise increase between Gaia DR2 and Gaia EDR3 is $\sim 50\%$, and the errors on the binary distances have improved by $10\%$.
A. Moran, C. Mingarelli, M. Bedell, et. al.
Fri, 21 Oct 22
47/76
Comments: 10 pages, 7 figures, 1 table
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