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Next neutron starROSAT PRC97-32    Upneutron star, radio star

pulsar comparison table
Subject is an instance of has period is a kind of has synonym has definition
binary pulsar  pulsarhidden mass 
Crab pulsarpulsar0.0331 seconds NP 0532A pulsar associated with the Crab Nebula. It has the shortest period of any known pulsar.
PSR B 1257+12pulsar  hidden massA pulsar in the constellation Virgo and the site of the first solar system to be discovered outside our own. The planets were detected in 1991.
Vela pulsarpulsar  Vela XA pulsar about 400-500 pc distant, probably associated with the Vela supernova remnant. Period 0.0892 seconds.
X-ray pulsar  pulsarhidden massPulsar (q.v.) that radiates in the X-ray region of the spectrum. Best verified examples are Her X-1 and Cen X-3. They are thought to be rotating, strongly magnetic neutron stars of about 1 Msun in a grazing orbit around a more massive star from which they are accreting matter.

Next neutron starROSAT PRC97-32    Upneutron star, radio star