Measurement of relativistic orbital decay in the PSR B1534+12 binary system

I. H. Stairs, Z. Auzoumanian, F. Camilo, A. G. Lyne, D. J. Nice, J. H. Taylor, S. E. Thorsett, Alexander Wolszczan

Research output: Contribution to journalArticle

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Abstract

We have made timing observations of binary pulsar PSR B1534 + 12 with radio telescopes at Arecibo, Green Bank, and Jodrell Bank. By combining our new observations with data collected up to seven years earlier, we obtain a significantly improved solution for the astrometric, spin, and orbital parameters of the system. For the first time in any binary pulsar system, no fewer than five relativistic or "post-Keplerian" orbital parameters are measurable with useful accuracies in a theory-independent way. We find the orbital period of the system to be decreasing at a rate close to that expected from gravitational radiation damping, according to general relativity, although the precision of this test is limited to about 15% by the otherwise poorly known distance to the pulsar. The remaining post-Keplerian parameters are all consistent with one another and all but one of them have fractional accuracies better than 1%. By assuming that general relativity is the correct theory of gravity, at least to the accuracy demanded by this experiment, we find the masses of the pulsar and companion star each to be 1.339 ± 0.003 M and the system's distance to be d = 1.1 ± 0.2 kpc, marginally larger than the d ap; 0.7 kpc estimated from the dispersion measure. The increased distance reduces estimates of the projected rate of coalescence of double neutron star systems in the universe, a quantity of considerable interest for experiments with terrestrial gravitational wave detectors such as the Laser Interferometer Gravitational-Wave Observatory.

Original languageEnglish (US)
Pages (from-to)352-357
Number of pages6
JournalAstrophysical Journal
Volume505
Issue number1 PART I
DOIs
StatePublished - Jan 1 1998

Fingerprint

pulsars
orbitals
decay
gravitational waves
relativity
coalescence
interferometer
double stars
companion stars
LIGO (observatory)
damping
radio telescopes
observatory
experiment
laser
radio
coalescing
gravity
neutron stars
universe

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Stairs, I. H., Auzoumanian, Z., Camilo, F., Lyne, A. G., Nice, D. J., Taylor, J. H., ... Wolszczan, A. (1998). Measurement of relativistic orbital decay in the PSR B1534+12 binary system. Astrophysical Journal, 505(1 PART I), 352-357. https://doi.org/10.1086/306151
Stairs, I. H. ; Auzoumanian, Z. ; Camilo, F. ; Lyne, A. G. ; Nice, D. J. ; Taylor, J. H. ; Thorsett, S. E. ; Wolszczan, Alexander. / Measurement of relativistic orbital decay in the PSR B1534+12 binary system. In: Astrophysical Journal. 1998 ; Vol. 505, No. 1 PART I. pp. 352-357.
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Stairs, IH, Auzoumanian, Z, Camilo, F, Lyne, AG, Nice, DJ, Taylor, JH, Thorsett, SE & Wolszczan, A 1998, 'Measurement of relativistic orbital decay in the PSR B1534+12 binary system', Astrophysical Journal, vol. 505, no. 1 PART I, pp. 352-357. https://doi.org/10.1086/306151

Measurement of relativistic orbital decay in the PSR B1534+12 binary system. / Stairs, I. H.; Auzoumanian, Z.; Camilo, F.; Lyne, A. G.; Nice, D. J.; Taylor, J. H.; Thorsett, S. E.; Wolszczan, Alexander.

In: Astrophysical Journal, Vol. 505, No. 1 PART I, 01.01.1998, p. 352-357.

Research output: Contribution to journalArticle

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Stairs IH, Auzoumanian Z, Camilo F, Lyne AG, Nice DJ, Taylor JH et al. Measurement of relativistic orbital decay in the PSR B1534+12 binary system. Astrophysical Journal. 1998 Jan 1;505(1 PART I):352-357. https://doi.org/10.1086/306151