High Quality Content by WIKIPEDIA articles! X-ray pulsars or accretion-powered pulsars are a class of astronomical objects that are X-ray sources displaying strict periodic variations in X-ray intensity. The X-ray periods range from as little as a fraction of a second to as much as several minutes. An X-ray pulsar consists of a magnetized neutron star in orbit with a normal stellar companion and are a type of binary star system. The magnetic field strength at the surface of the neutron star is typically about 1012 gauss, over a trillion times stronger than the strength of the magnetic field measured at the surface of the Earth (0.6 gauss). Gas is accreted from the stellar companion and is channeled by the neutron star's magnetic field on to the magnetic poles producing two or more localized X-ray hot spots similar to the two auroral zones on the Earth but far hotter.

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