pulsar

listen to the pronunciation of pulsar
Englisch - Englisch
: A rotating neutron star that emits radio pulses periodically
a neutron star which appears to emit energy in pulses These pulses can be in any (and all) wavelengths
A pulsar is a star that spins very fast and cannot be seen but produces regular radio signals. an object like a star that is far away in space and produces radiation and radio waves quasar (pulse + -ar (as in quasar)). in full pulsating radio star Any of a class of cosmic objects that appear to emit extremely regular pulses of radio waves. A few give off short rhythmic bursts of visible light, X rays, and gamma radiation as well. Thought to be rapidly spinning neutron stars, they were discovered by Antony Hewish and Jocelyn Bell Burnell in 1967 with a specially designed radio telescope. More than 550 have been detected since. All behave similarly, but the intervals between pulses (and thus their rotation periods) range from one-thousandth of a second to four seconds. Charged particles from the surface enter the star's magnetic field, which accelerates them so that they give off radiation, released as intense beams from the magnetic poles. These do not coincide with the pulsar's own axis of rotation, so as the star spins, the radiation beams swing around like lighthouse beams and are seen as pulses. Pulsars have been shown to be slowing down, typically by a millionth of a second per year. It has been calculated that pulsars "switch off" after about 10 million years, when their magnetic fields weaken enough
A rotating neutron star which generates regular pulses of radiation Pulsars were discovered by observations at radio wavelengths but have since been observed at optical, x-ray, and gamma-ray energies
A type of neutron star with a beam of emission that sweeps around as the star rotates
a degenerate neutron star; small and extremely dense; rotates very fast and emits regular pulses of polarized radiation
{i} (Astronomy) celestial body which radiates electromagnetic pulses at regular intervals (believed to be a rapidly spinning neutron star)
A radio source that emits short pulses of radiation at regular intervals
A rotating neutron star that emits radio pulses periodically
a form of neutron star that emits pulses of very high energy radio waves
A spinning neutron star that emits energy along its gravitational axis This energy is received as pulses as the star rotates
"Pulsating Radio Source"
young neutron star with a strong magnetic field and rapid rotation that produces beams of radiation out of its magnetic poles If the beams cross our line of sight, we see the star ``pulsate'' (flash on and off)
A rotating neutron star that emits regular pulses of radio waves
A rapidly rotating neutron star that emits beams of radiation along misaligned magnetic axes
A pulsar is a spinning magnetized neutron star that sends jets of light and radiation out from its magnetic poles These jets are detected on earth as pulses of radiation as the jet sweeps into earth view, much like a light house beacon See NASA's description
A neutron star with a very fast rotational component and strong magnetic field, which constrains emitting radiation to a cone To be visible from Earth, a pulsar must be oriented such that the cone of emitted radiation intersects Earth Tutorial*
A celestial object of small angular size that emits periodic pulses of radio waves between 0 03 and 5 seconds
Object that emits radiation in the form of rapid pulses with a characteristic pulse period and duration Charged particles, accelerated by the magnetic field of a rapidly rotating neutron star, flow along the magnetic field lines, producing radiation that beams outward as the star spins on its axis
very small, highly condensed, rapidly spinning star emitting a narrow beam of electromagnetic radiation, observed as a fast pulse from Earth Believed to be the neutron core remnant of a supernova explosion
A neutron star (burnt-out star) that emits radio waves which pulse on and off
PSR
pulsars
plural of pulsar
Türkisch - Englisch
pulsar
pulsar

    Silbentrennung

    pul·sar

    Türkische aussprache

    pûlsır

    Aussprache

    /ˈpo͝olsər/ /ˈpʊlsɜr/

    Etymologie

    [ 'p&l-"sär ] (noun.) 1968. From pulsating star, patterned after quasar.

    Wort des Tages

    obsequious
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