太空中的X射线回音

27 January 2004
XMM-Newton's X-ray EPIC camera shows the expanding rings caused by a flash of X-rays scattered by dust in our Galaxy. The X-rays were produced by a powerful gamma-ray burst that took place on 3 December 2003. The slowly fading afterglow of the gamma-ray burst is at the centre of the expanding rings. Other, unrelated, X-ray sources can also be seen. The time since the gamma-ray explosion is shown in each panel in hours. At their largest size, the rings would appear in the sky about five times smaller than the full moon.

Credits: ESA, S. Vaughan (University of Leicester)

欧洲空间局的XMM牛顿X射线望远镜拍摄的这些图象展现了X射线闪光被银河系中的尘埃分散的情景。X射线由2003年12月3日的一次强劲的伽马射线暴产生。膨胀的环中央是逐渐黯淡的伽马射线暴余辉。而不相干的X射线源也在图中可见。四张图按时间顺序排列，相隔1小时。其最大尺寸相当于五分之一满月直径。

爆发的动画见http://esamultimedia.esa.int/images/spcs/xmmnewton/snr2004-02.gif

伽马射线暴是怎么形成的?

伽马射线暴是中子星落入黑洞时产生的 ？？？

这帖子不错，还有那2MB的动画，俺都要了：）