High-precision timing of millisecond pulsars. I - Astrometry and masses of the PSR 1855 + 09 system

Abstract

view Abstract Citations (117) References (33) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS High-Precision Timing of Millisecond Pulsars. I. Astrometry and Masses of the PSR 1855+09 System Ryba, M. F. ; Taylor, J. H. Abstract The observing method, data-analysis procedures, and results of a 4.4-year series of timing observations of a binary millisecond pulsar PSR 1855 + 09 are presented. The spin parameters of the pulsar, astrometry of the system, including parallax and proper motion, and orbital parameters including masses of the two components are considered. The parameter values show the orbital inclination to be nearly 90 deg, and they provide mass estimates for the pulsar (1.27 +0.23/-0.15 solar mass) and companion star (0.233 +0.026/-0.017 solar mass). Both masses are found in good agreement with theoretical predictions based on neutron-star physics and evolutionary models of the PSR 1855 + 09 system. Publication: The Astrophysical Journal Pub Date: April 1991 DOI: 10.1086/169938 Bibcode: 1991ApJ...371..739R Keywords: Astrometry; Binary Stars; Neutron Stars; Pulsars; Stellar Mass; Stellar Orbits; Companion Stars; Ephemeris Time; Kepler Laws; Orbit Calculation; Stellar Evolution; Stellar Models; Astronomy; ASTROMETRY; PULSARS; RELATIVITY; STARS: BINARIES; STARS: NEUTRON; STARS: INDIVIDUAL ALPHANUMERIC: PSR 1855; 09 full text sources ADS | data products SIMBAD (2) Related Materials (2) Part 2: 1991ApJ...380..557R Part 3: 1994ApJ...428..713K