Accurate timing and interferometer positions for the millisecond pulsar 1937 + 21 and the binary pulsar 1913 + 16

Details Accurate timing and interferometer positions for the millisecond pulsar 1937 + 21 and the binary pulsar 1913 + 16 Accurate timing and interferometer positions for the millisecond pulsar 1937 + 21 and the binary pulsar 1913 + 16

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985aj.....90.2275b&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 90, Nov. 1985, p. 2275-2280.

Astronomy and Astrophysics

Astronomy

13

Astrometry, Binary Stars, Position (Location), Pulsars, Radio Interferometers, Time Measurement, Accuracy, Ephemerides, Solar System, Stellar Luminosity

Scientific paper

The authors have made astrometric interferometer observations of PSR 1937+21 and PSR 1913+16 at the VLA in the FK4 B1950.0 reference frame with positional accuracy of ±0.05arcsec and ±0.15arcsec, respectively. After removing the E terms of aberration, they compare these positions with ones obtained from pulse-timing observations, which are accurate to ±0.001arcsec and ±0.003arcsec, respectively, in the reference frame of solar system ephemerides. The timing position of PSR 1937+21 agrees to within 0.07arcsec(1.3σ) of the VLA position; comparison of the same observations in the J2000.0 reference frame reduces the discrepancy to 0.01arcsec. The result for PSR 1913+16 stengthens the conclusion of Elliot et al. (1980) that a faint star near the pulsar is not the orbiting companion.

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