pulsar


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Related to pulsar: quasar

pul·sar

 (pŭl′sär′)
n.
Any of several celestial objects emitting periodic, short, intense bursts of radio, x-ray, or visible electromagnetic radiation, generally believed to be quickly rotating neutron stars.

[From puls(ating st)ar (influenced by quasar).]

pulsar

(ˈpʌlˌsɑː)
n
(Astronomy) any of a number of very small extremely dense objects first observed in 1967, which rotate very rapidly and emit very regular pulses of polarized radiation, esp radio waves. They are thought to be neutron stars formed following supernova explosions
[C20: from puls(ating st)ar, on the model of quasar]

pul•sar

(ˈpʌl sɑr)

n.
any of several hundred known celestial objects, generally believed to be rapidly rotating neutron stars, that emit pulses of radiation, esp. radio waves, with a high degree of regularity.
[1968; puls(ating st)ar, on the model of quasar]

pul·sar

(pŭl′sär′)
A spinning neutron star that emits radiation, usually radio waves, in very short and very regular pulses. Because a pulsar's magnetic poles do not align with the poles of its axis, its beams of radiation sweep around like the beacon of a lighthouse.
Did You Know? When a very large star goes off like a giant bomb in an explosion called a supernova, the core of the star collapses into either a neutron star or a black hole. In 1054, one of these explosions could be seen in the sky during both day and night for 23 days. Chinese astronomers took note of this "guest star," and rock paintings and pottery found in Arizona and New Mexico suggest that Native Americans recorded it, too. In the 18th century, astronomers discovered in the constellation Taurus the leftovers that had been blown away by this explosion, the bright cloud called the Crab Nebula. In the late 1960s, 900 years after the supernova, astronomers found a source of rapidly pulsing radio waves, with 30 flashes per second, near the center of this nebula. The source of this pulsating radiation is an object that was named a pulsar. We now know that a pulsar is a rapidly rotating neutron star whose radiation is emitted like a spinning flashlight. Over 700 pulsars have now been detected, with rates of rotation ranging from once every 4 seconds to more than 600 times per second.

pulsar

A rapidly rotating neutron star that gives off regular bursts of radio waves.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.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
Translations

pulsar

[ˈpʌlsɑːʳ] Npulsar m

pulsar

nPulsar m

pulsar

[ˈpʌlsəʳ] npulsar m or f inv
References in periodicals archive ?
Using the Chandra X-ray Observatory, Bettina Posselt (Penn State University) and colleagues studied two very different pulsars, Geminga (left) and B0355+54, both of which are surrounded by clouds of X-ray-emitting particles, called pulsar wind nebulae, that are swept back by the pulsars' passage.
Detecting this signal is possible if we are able to monitor a sufficiently large number of pulsars spread across the sky," said Stephen Taylor, lead author of the paper published this week in The Astrophysical Journal Letters.
Any planets around a pulsar either improbably survived the detonation of their sun or formed out of debris raining down in the wake of the explosion.
S Ravikumar, president, business development, Bajaj Motorcycles, said, 'CT and Platina still continue a good run of 80,000 units per month, Pulsar new models have almost touched 11,600 units and there are heavy back orders there.
Standard equipment includes air con, Bluetooth and cruise control, while the likes of lane departure warning, sat nav, blind spot monitors and Nissan's 360-degree view camera system come on top specification models, which see the four-trim Pulsar range topping out at PS21,945.
The pulsar, a type of neutron star, is known as IGR J11014-6103.
It was first identified as a millisecond radio pulsar in 2005 with the National Science Foundation's Robert C.
Knispel said that the search for new radio pulsars is very computer intensive and to determine the a priori unknown characteristics of the pulsar, e.
On November 2001 Bajaj Auto launched the Pulsar in two engine capacities, a powerful 180 cc engine generating 15 Ps of raw pulsating power and the other with a hi-performance 150cc engine.
The new Pulsar has a 200 cc gasoline engine while its chassis comprises a pressed steel perimeter frame and a rectangular tube section swing arm delivering over three times the lateral stiffness of a P220 frame.
At the heart of the new Pulsar is its cutting-edge engine which sets new benchmarks in performance, emission and incidentally also fuel efficiency.
SAN DIEGO -- The Eclipse Foundation today announced a new release of Eclipse Pulsar, an application development tools platform for mobile developers.