The Mass of a Millisecond Pulsar

  title={The Mass of a Millisecond Pulsar},
  author={Bryan A. Jacoby and Aidan Hotan and Matthew Bailes and Stephen M. Ord and Shrinivas R. Kulkarni},
  journal={The Astrophysical Journal},
We report on nearly 2 years of timing observations of the low-mass binary millisecond pulsar PSR J1909-3744 with the Caltech-Parkes-Swinburne Recorder II, a new instrument that gives unprecedented timing precision. Daily observations give a weighted rms residual of 74 ns, indicating an extremely low level of systematic error. We have greatly improved on the previous parallax and proper motion measurements of PSR J1909-3744, yielding a distance of 1.14 kpc and transverse velocity of 200 km s-1… Expand

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