THE NANOGRAV NINE-YEAR DATA SET: MASS AND GEOMETRIC MEASUREMENTS OF BINARY MILLISECOND PULSARS

ABSTRACT We analyze 24 binary radio pulsars in the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) nine-year data set. We make 14 significant measurements of the Shapiro delay, including new detections in four pulsar-binary systems (PSRs J0613−0200, J2017+0603, J2302+4442, and J2317+1439), and derive estimates of the binary-component masses and orbital inclination for these MSP-binary systems. We find a wide range of binary pulsar masses, with values as low as for PSR J1918−0642 and as high as for PSR J1614−2230 (both 68.3% credibility). We make an improved measurement of the Shapiro timing delay in the PSR J1918−0642 and J2043+1711 systems, measuring the pulsar mass in the latter…

• NS
  National Science Foundation

  Awards: 0968296, 1430284, AST-1100968, 1100968
• NA
  National Aeronautics and Space Administration

  Award: NNX15AK07H
• CI
  California Institute of Technology
• US
  Universities Space Research Association
• JP
  Jet Propulsion Laboratory
• NS
  Natural Sciences and Engineering Research Council of Canada