The white source near the center of the image is a dense, rapidly rotating neutron star, or pulsar, all that remains of a core-collapse supernova explosion.

图片靠近中心部分的白色光源为一种密度大，急速旋转的中子星，或是脉冲星--都是核心坍缩的超新星爆炸的残留物。

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A numerical method of the statistics fluctuation problem of fission chains is studied for fission system driven by a weak neutron source.

研究了弱中子源驱动下，裂变系统中子裂变链统计涨落问题的数值计算方法。

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The numerical method of the statistics fluctuation problem of fission chain is studied for a fission system driven by a weak neutron source.

研究了弱中子源驱动下，裂变系统中子裂变链统计涨落问题的数值计算方法。

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The device's primary source of neutron radiation was the radioactive element californium, but the stream of neutrons produced by the californium was multiplied by passing it through a lattice of highly enriched uranium U-235, whose nuclear fission released additional neutrons.

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In this case the source would have to be something far more exotic, such as a neutron star being swallowed by a black hole or colliding with another neutron star.

ECONOMIST: Astronomy

Dr Ardavan is confident that, if the machine can be coaxed into doing this, it will radiate in exactly the way he predicts, providing a tuneable and compact source of high-frequency microwaves in effect, a tabletop pulsar, without the neutron star.

ECONOMIST: Physics