Reports

X-ray Pulsar in the Crab Nebula

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Science  09 May 1969:
Vol. 164, Issue 3880, pp. 709-712
DOI: 10.1126/science.164.3880.709

Abstract

X-ray pulsations have been observed in the Crab Nebula at a frequency closely matching the radio and optical pulsations. About 5 percent of the total x-ray power of the nebula appears in the pulsed component. The x-ray pulsations have the form of a main pulse and an interpulse separated by about 12 milliseconds.