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Nature of Her X-1


IYENGAR et al.1 have reported observations of hard X rays from Her X-1, which seem to set an upper limit of 10% on the pulsating component in the energy range 20 to 45 keV. I offer a simple explanation that does not require the additional source of X rays postulated by Iyengar et al.

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WANG, YM. Nature of Her X-1. Nature 253, 249–250 (1975).

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