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

Journal Article · Fri Nov 01 00:00:00 EST 1985 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/113930· OSTI ID:5486153

Backer, D C; Fomalont, E B; Goss, W M; Taylor, J H; Weisberg, J M

Astrometric interferometer observations of PSR 1937 + 21 and PSR 1913 + 16 were made at the VLA in the FK4 B1950.0 reference frame with positional accuracy of + or - 0.05 arcsec and + or - 0.15 arcsec, respectively. After removing the E terms of aberration, these positions are compared with ones obtained from pulse-timing observations, which are accurate to + or - 0.001 arcsec and + or - 0.003 arcsec, respectively, in the reference frame of solar system ephemerides. The timing position of PSR 1937 + 21 agrees to within 0.07 arcsec (1.3 sigma) of the VLA position; comparison of the same observations in the J2000.0 reference frame reduces the discrepancy to 0.01 arcsec. The result for PSR 1913 + 16 strengthens the conclusion of Elliot et al. (1980) that a faint star near the pulsar is not the orbiting companion. 26 references.

• Research Organization: Univ. of California, Berkeley, CA (United States); National Radio Astronomy Observatory, Socorro, NM; Princeton Univ., NJ (United States)
• OSTI ID: 5486153
• Journal Information: Astron. J.; (United States), Vol. 90
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
PULSARS
COORDINATES
ACCURACY
BINARY STARS
INTERFEROMETRY
LUMINOSITY
SOLAR SYSTEM
TIME MEASUREMENT
COSMIC RADIO SOURCES
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
STARS
640103* - Astrophysics & Cosmology- Quasi-Stellar
Radio
& X-Ray Sources- (-1987)