Abstract
WE have tried to detect pulses of hard X-rays from the Crab Nebula at the same repetition rate as the radio1 and optical pulses2. Measurements3,4 of the angular diameter of the X-ray source do not preclude the possibility that a small fraction of the X-ray flux is emitted from the compact source required by the short length of the pulses.
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HILLIER, R., JACKSON, W., MURRAY, A. et al. Attempt to detect X-ray Pulses from the Crab Nebula. Nature 222, 149–150 (1969). https://doi.org/10.1038/222149a0
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DOI: https://doi.org/10.1038/222149a0
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