Other
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...183.3704c&link_type=abstract
American Astronomical Society, 183rd AAS Meeting, #37.04; Bulletin of the American Astronomical Society, Vol. 25, p.1345
Other
Scientific paper
The binary millisecond pulsar J1713+0747 (P=4.57 ms;P_b=67.8 d) was discovered in a systematic continuing survey for millisecond pulsars with the Arecibo radio telescope (Foster, Wolszczan & Camilo 1993, ApJ, 410, L91). We have carried out multi-frequency observations of this object at approximately bi-weekly intervals. With an rms residual in the predicted vs. observed times-of-arrival (TOAs) of <0.5 mu sec, and a large characteristic age, tau_c ~ 10(10) yr, this object is one of the most precise celestial clocks among all known pulsars. We detect a signature in the TOA residuals which is most naturally interpreted in terms of a general relativistic ``Shapiro Delay'', caused as the pulsar signals traverse the gravitational potential well of its ~ 0.2 M_sun companion, with the orbital angular momentum of the system lying nearly parallel to the plane of the sky. With this information we can determine the mass of the (presumed) white dwarf companion star, and the inclination angle of the orbit. Knowing the pulsar mass function (0.0079 M_sun), we can in turn determine the mass of the pulsar itself. This measurement is important, among other reasons, for comparisons against the evolutionary scenarios that predict substantial mass accretion by the pulsar as it is spun up to millisecond periods by mass transfer from its companion in a low mass x-ray binary phase.
Camilo Fernando
Foster Roger S.
Wolszczan Alex
No associations
LandOfFree
Shapiro Delay in the Low Mass Binary Millisecond Pulsar J1713+0747 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Shapiro Delay in the Low Mass Binary Millisecond Pulsar J1713+0747, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shapiro Delay in the Low Mass Binary Millisecond Pulsar J1713+0747 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-778473