pulsar

pul·sar  (plsär)

n.

Any of several celestial radio sources emitting short intense bursts of radio waves, x-rays, or visible electromagnetic radiation at regular intervals, generally believed to be rotating neutron stars.

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[From pulse, by analogy with quasar.]

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pulsar

Noun

a very small star which emits regular pulses of radio waves [from puls(ating st)ar]

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pulsar  (plsär)

A rapidly spinning neutron star that emits radiation, usually radio waves, in narrow beams focused by the star's powerful magnetic field and streaming outward from its magnetic poles. Because the pulsar's magnetic poles do not align with the poles of its rotational axis, the beams of radiation sweep around like the beacon of a lighthouse and are thus observed on Earth as short, regular pulses, with periods anywhere between 1 millisecond and 4 seconds.

Thesaurus

Noun

1.

pulsar - a degenerate neutron star; small and extremely dense; rotates very fast and emits regular pulses of polarized radiation neutron star - a star that has collapsed under its own gravity; it is composed of neutrons