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X-ray PulsarAn X-ray pulsar is a neutron star with a powerful magnetic field that gives rise to regular X-ray pulses. These pulses are thought to be caused by the magnetic field channeling the accreting gas on to the poles of the compact star, producing localized hot spots that move in and out of view as the star spins. The first X-ray pulsar was Cen X-3, discovered in 1971 during observations with the Uhuru satellite. More than 130 are now known.
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