Abstract
The pulsed optical radiation from the Crab pulsar has a characteristic and well determined profile. As the pulsar is comparatively young, the slope of this profile may be expected to change appreciably within only a few years. Our observations over an interval of 7yr show that any such changes are surprisingly small, amounting to <1% of the peak pulse intensity.
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References
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Jones, D., Smith, F. & Nelson, J. Changes in the optical light curve of the Crab pulsar between 1970 and 1977. Nature 283, 50–51 (1980). https://doi.org/10.1038/283050a0
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DOI: https://doi.org/10.1038/283050a0
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