Measurement of pulsar parallaxes by VLBI

Details Measurement of pulsar parallaxes by VLBI Measurement of pulsar parallaxes by VLBI

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....91..338g&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 91, Feb. 1986, p. 338-342. NSF-supported research.

Astronomy and Astrophysics

Astronomy

79

Pulsars, Quasars, Stellar Parallax, Very Long Base Interferometry, Earth Ionosphere, Electron Density (Concentration), Radio Astronomy

Scientific paper

Results of a program of astrometric observations of pulsars by very long baseline interferometry are presented, including two measurements of annual parallaxes. The absence of relative motion of two quasar pairs is also observed. Observations were made at 1.66 GHz over a period of 18 months. Each program source was observed relative to a nearby reference source, and then the observed phases of each were corrected for nutation, precession, polar motion, and the effects of the troposphere and ionosphere. For pulsars PSR 0823 + 16 and PSR 0950 + 08, parallaxes of 2.8 + or - 0.6 and 7.9 + or - 0.8 mass were obtained, respectively. In a combination with published measurements of pulse dispersion, the results yield average free-electron densities of 0.054 + or = 0.011 and 0.023 + or 0.002 cu cm along the lines of sight to these pulsars.

Affiliated with

Also associated with

No associations

Rating

Measurement of pulsar parallaxes by VLBI 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 Measurement of pulsar parallaxes by VLBI, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of pulsar parallaxes by VLBI will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1674151