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

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

Research output: Contribution to journalArticle

21 Scopus citations

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

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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