Definitions for PULSARˈpʌl sɑr

This page provides all possible meanings and translations of the word PULSAR

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  1. pulsar(noun)

    a degenerate neutron star; small and extremely dense; rotates very fast and emits regular pulses of polarized radiation

WiktionaryRate this definition:(0.00 / 0 votes)

  1. pulsar(Noun)

    : A rotating neutron star that emits radio pulses periodically

  2. Origin: From pulsating star, patterned after quasar.

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  1. Pulsar

    A pulsar 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.

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