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nasa's nicer x-ray telescope on the

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international space station has just

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shown that random outbursts from pulsars

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pack more of a punch than previously

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thought

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pulsars are rapidly spinning neutron

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stars the crushed cores of exploded

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stars

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one of the best-known pulsars lies at

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the heart of the famous crab nebula

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located about 6 500 light years away

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light from the supernova that formed it

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reached earth less than a thousand years

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ago in the year 1054.

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the crab pulsar spins 30 times a second

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and steadily blinks in radio visible

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light x-rays and gamma rays but it also

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emits random jumbo bursts called giant

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radio pulses they can be more than 10

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times stronger than its regular signals

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now thanks to nicer's sensitivity

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astronomers have shown that each giant

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pulse comes with an increase in x-ray

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brightness as well

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observing the crabs simultaneously with

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nicer and radio telescopes in japan

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astronomers captured data over some 3.7

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million rotations they show a nearly 4

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increase in x-ray emission with each

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giant pulse

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this means the phenomena responsible for

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giant radio pulses produced 10 or more

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times the energy previously estimated

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from radio and visible data alone

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astronomers think all these signals

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originate from particle interactions in

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the pulsar's rapidly spinning magnetic

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field but the details remain poorly

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known

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better understanding of giant pulses

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may help scientists figure out how

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pulsars like the crab do what they do it

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may also provide us with insight into a

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much more powerful phenomenon called

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fast radio bursts which are linked to

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spinning neutron stars in our galaxy and