Stroboscopic optical observations of the Crab pulsar
Simon Vidrih, Andrej Cadez, Mirjam Galicic, Alberto Carraminana
Abstract
Photometric data of the Crab pulsar, obtained in stroboscopic mode over a period of more than eight years, are presented here. The applied Fourier analysis reveals a faint 60 second modulation of the pulsar's signal, which we interpret as a free precession of the pulsar.
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