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

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

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...356..243f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 356, June 10, 1990, p. 243-249.

Astronomy and Astrophysics

Astrophysics

22

Neutron Stars, Pulsars, Stellar Rotation, Supernova Remnants, Cosmic Rays, Electron Density (Concentration), Pulsar Magnetospheres, Very Large Array (Vla)

Scientific paper

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 x 10 to the -9th was accompanied by a fractional change in the frequency derivative of -0.00019 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/cu cm. Together, dispersion measure fluctuations and diffractive scintillations indicate a power-law electron density turbulence spectrum on scales sizes between 10 to the 9th and 10 to the 14th cm that may be relevant to cosmic-ray propagation.

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