Abstract
OBSERVATIONS of the pulsar NP 0532 in the gamma ray region have yielded evidence of pulsed gamma ray emission for energies up to 10 MeV (refs. 1, 2 and Kurfess, to be published). Above this energy, upper limits between 10 MeV and 150 MeV (refs. 3, 4) and above 50 MeV (ref. 5) are indicated. A result above 70 MeV with phase error of 3 ms with respect to optical signal has been given by a counter experiment6.
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VASSEUR, J., PAUL, J., PARLIER, B. et al. Search for Pulsed Gamma Ray Emission above 50 MeV from NP 0532. Nature Physical Science 233, 46–48 (1971). https://doi.org/10.1038/physci233046a0
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DOI: https://doi.org/10.1038/physci233046a0
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