Abstract
OPTICAL timing of the pulsar in the Crab nebula revealed a further speed-up by Δν = 0.097 periods d−1 = 3.7 × 10−8 ν, on 1975 February 4 (JD 2442447.9). The initial jump in pulse frequency was at least three times larger than that reported1 for the first glitch, and allows a better estimate of the glitch parameters.
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LOHSEN, E. Third speed-up of the Crab pulsar. Nature 258, 688–689 (1975). https://doi.org/10.1038/258688a0
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DOI: https://doi.org/10.1038/258688a0
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