The Crab Nebula is emitting x rays that pulse with the same frequency as the radio signals from the pulsar NP 0532, according to recent observations by several groups. Earlier, NP 0532 had been found to pulse optically with the same frequency as the radio signals (PHYSICS TODAY, March, page 60).

Topics
Bioacoustics of fish and crustaceans, X-rays, Nebulae, Pulsars
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© 1969 American Institute of Physics.
1969
American Institute of Physics
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