Pulsar

A pulsar (portmanteau of pulsating star) is a highly magnetized, rotating neutron star that emits a beam of electromagnetic radiation. This radiation can only be observed when the beam of emission is pointing toward the Earth, much the way a lighthouse can only be seen when the light is pointed in the direction of an observer, and is responsible for the pulsed appearance of emission. Neutron stars are very dense, and have short, regular rotational periods. This produces a very precise interval between pulses that range from roughly milliseconds to seconds for an individual pulsar.

The precise periods of pulsars makes them useful tools. Observations of a pulsar in a binary neutron star system were used to indirectly confirm the existence of gravitational radiation. The first extrasolar planets were discovered around a pulsar, PSR B1257+12. Certain types of pulsars rival atomic clocks in their accuracy in keeping time.

Read more about Pulsar:  Discovery, Nomenclature, Formation, Categories, Applications, Significant Pulsars, Video Gallery

Other articles related to "pulsar, pulsars":

Transiting Extrasolar Planets - Established Detection Methods - Pulsar Timing
... See also List of extrasolar planets detected by timing A pulsar is a neutron star the small, ultradense remnant of a star that has exploded as a supernova ... Pulsars emit radio waves extremely regularly as they rotate ... Because the intrinsic rotation of a pulsar is so regular, slight anomalies in the timing of its observed radio pulses can be used to track the pulsar's motion ...
Pulsar - Video Gallery
... These are some videos of pulsars What is a Pulsar? Sorry, your browser either has JavaScript disabled or does not have any supported player ... Pulsar Detection ... A pulsar blinking ...
The Hercules Text - Plot Summary - The Extraterrestrial Message
... that the message was sent with an artificial Pulsar built by the alien race ... This pulsar with the name Althea has been known by the scientists for years ... It was believed to be a normal pulsar ...
Timing Noise
... A pulsar (portmanteau of pulsating star) is a highly magnetized, rotating neutron star that emits a beam of electromagnetic radiation ... that range from roughly milliseconds to seconds for an individual pulsar ... The precise periods of pulsars makes them useful tools ...