Timing properties of PSR 1951+32 in the CTB 80 supernova remnant

R. S. Foster, D. C. Backer, Alexander Wolszczan

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Timing observations of PSR 1951 + 32, the 39.5 ms pulsar found in the CTB 80 supernova remnant, have detected a spin-up in the rotation rate of the neutron star. The fractional change in the rotational frequency of 2.1 × 10-9 was accompanied by a fractional change in the frequency derivative of -1.9 × 10-4 which has persisted for 1 yr after the event. Updated VLA astrometric observations of the pulsar are presented. Dispersion measure variations have been measured between 430 MHz and 1400 MHz at the level of 0.02 pc cm-3. Together, dispersion measure fluctuations and diffractive scintillations indicate a power-law electron density turbulence spectrum on scale sizes of 109-14 cm that may be relevant to cosmic-ray propagation.

Original languageEnglish (US)
Pages (from-to)243-249
Number of pages7
JournalAstrophysical Journal
Volume356
Issue number1
DOIs
StatePublished - Jun 10 1990

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supernova remnants
pulsars
time measurement
cosmic ray
electron density
neutron stars
scintillation
cosmic rays
power law
turbulence
propagation
rate

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Foster, R. S. ; Backer, D. C. ; Wolszczan, Alexander. / Timing properties of PSR 1951+32 in the CTB 80 supernova remnant. In: Astrophysical Journal. 1990 ; Vol. 356, No. 1. pp. 243-249.
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Timing properties of PSR 1951+32 in the CTB 80 supernova remnant. / Foster, R. S.; Backer, D. C.; Wolszczan, Alexander.

In: Astrophysical Journal, Vol. 356, No. 1, 10.06.1990, p. 243-249.

Research output: Contribution to journalArticle

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AU - Backer, D. C.

AU - Wolszczan, Alexander

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