A radio pulsar spinning at 716 Hz.
作者： Jason WT Hessels , Scott M Ransom , Ingrid H Stairs , Paulo CC Freire , Victoria M Kaspi
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摘要: We have discovered a 716-hertz eclipsing binary radio pulsar in the globular cluster Terzan 5 using Green Bank Telescope. It is fastest spinning neutron star found to date, breaking 24-year record held by 642-hertz B1937+21. The difficulty detecting this pulsar, because of its very low flux density and high eclipse fraction (∼40% orbit), suggests that even faster stars exist. If has mass less than twice Sun, then radius must be constrained spin rate <16 kilometers. short period also constrains models suggest gravitational radiation, through an r -mode (Rossby wave) instability, limits maximum frequency stars.
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