The relativistic pulsar-white dwarf binary PSR J1738+0333 - II. The most stringent test of scalar-tensor gravity

  title={The relativistic pulsar-white dwarf binary PSR J1738+0333 - II. The most stringent test of scalar-tensor gravity},
  author={Paulo C. C. Freire and Norbert Wex and Gilles Esposito-Far{\`e}se and Joris P W Verbiest and Matthew Bailes and Bryan A. Jacoby and Michael Kramer and Ingrid H. Stairs and John Antoniadis and G. Janssen},
  journal={Monthly Notices of the Royal Astronomical Society},
  • P. Freire, N. Wex, G. Janssen
  • Published 7 May 2012
  • Physics, Geology
  • Monthly Notices of the Royal Astronomical Society
We report the results of a 10-year timing campaign on PSR J1738+0333, a 5.85-ms pulsar in a low-eccentricity 8.5-h orbit with a low-mass white dwarf companion. We obtained 17 376 pulse times of arrival with a stated uncertainty smaller than s and weighted residual rms of s. The large number and precision of these measurements allow highly significant estimates of the proper motion μα, δ= (+7.037 ± 0.005, +5.073 ± 0.012) mas yr−1, parallax πx = (0.68 ± 0.05) mas and a measurement of the apparent… 

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