A new binary millisecond pulsar

R. S. Foster, A. Wolszczan, F. Camilo

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A 4.57 ms pulsar, PSR J1713+0747, in a 67.8 day binary orbit with a low-mass (>0.28 M) companion has been detected in a systematic search of the sky at high Galactic latitudes with the Arecibo radio telescope. The new pulsar is characterized by a weak magnetic field of 1.9 × 108 G and a spin-down age of 8.9 ± 1.0 Gyr, making it probably one of the oldest neutron stars currently observed. The distance to the pulsar is ∼0.8 kpc as indicated by its dispersion measure. Small timing residuals (∼ 1 μs), a relatively large flux density at GHz frequencies (S1400 ∼ 3 mJy), and a narrow, sharply peaked pulse morphology, make PSR J1713+0747 a new celestial clock of extraordinary precision and a rare target for VLBI frame-tie experiments.

Original languageEnglish (US)
Pages (from-to)L91-L94
JournalAstrophysical Journal
Issue number2 PART 2
StatePublished - Jun 20 1993

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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