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physical object > natural object > celestial body > star > neutron star > pulsar > Crab pulsar

Crab pulsar comparison table

Subject	is an instance of	has period	is a kind of	has synonym	has definition
pulsar			radio star	hidden mass	An object discovered at Cambridge University in 1967 which has the mass of a star and a radius no larger than that of Earth and which emits radio pulses with a very high degree of regularity (periods range from 0.03 s for the youngest to more than 3 s for the oldest). All pulsars are characterized by the general properties of dispersion, periodicity, and short duty cycle. Pulsars are believed to be rotating, magnetic (surface magnetic fields of 1010 to 1014 gauss are estimated) neutron stars which are the end products of supernovae. Type S pulsars have a simple pulse shape: Type C, complex: Type D have drifting subpulses.
Crab pulsar	pulsar	0.0331 seconds		NP 0532	A pulsar associated with the Crab Nebula. It has the shortest period of any known pulsar.

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