Third speed-up of the Crab pulsar

Details Third speed-up of the Crab pulsar Third speed-up of the Crab pulsar

Dec 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975natur.258..688l&link_type=abstract

Nature, vol. 258, Dec. 25, 1975, p. 688, 689.

Astronomy and Astrophysics

Astronomy

39

Crab Nebula, Light Emission, Pulsars, Pulse Rate, Stellar Rotation, Astronomical Models, Logarithms, Stellar Radiation

Scientific paper

Results are presented for optical timings of the Crab pulsar which indicated a speed-up by 0.097 period per day on February 4, 1975. It is noted that the initial jump in pulse frequency was at least three times larger than that reported for the first glitch in 1972 and allows a better estimate of the glitch parameters. Time residuals from a cubic fit to barycentric arrival times before the present glitch are given along with a plot of the natural logarithms of the frequency differences determined from the cubic fit. Parameters of the three known glitches are tabulated, and it is concluded that there is no need to assume a significant deviation from the two-component model for glitches proposed by Ruderman (1969) and Baym et al. (1969).

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