Supernova explosions release tremendous amounts of radio radiation, x-radiation and cosmic rays, as well as other elements.

超新星爆炸时发射出大量的无线电射线、X射线和宇宙射线以及其他粒子。

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Now the galaxy is full of gas and dust, which could hide a distant supernova optically, but the remnant would still produce detectable radio waves and X-rays.

现在，星系充满了气体和灰尘，掩盖了遥远的超新星的可见性，但是(它的)残骸依然放射出可检测的无线电波和X射线。

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These sources are generally viewed in projection against radio nebulae representing the remnants of supernova outbursts.

这类源一般都投影在超星爆发残骸的射电星云上。

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Indeed, the conference heard of still more supernova remnants that had been declared free of detectable radio pulsars and also of a few previous associations between remnants and pulsars that have turned out to be false.

ECONOMIST: Pulsars