Butt Yousaf
High Energy Astrophysics Division, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA.
Nature. 2009 Aug 6;460(7256):701-4. doi: 10.1038/nature08127.
The origin of Galactic cosmic-ray ions has remained an enigma for almost a century. Although it has generally been thought that they are accelerated in the shock waves associated with powerful supernova explosions-for which there have been recent claims of evidence-the mystery is far from resolved. In fact, we may be on the wrong track altogether in looking for isolated regions of cosmic-ray acceleration.
近一个世纪以来，银河系宇宙射线离子的起源一直是个谜。尽管人们普遍认为它们是在与强大的超新星爆炸相关的冲击波中加速形成的——最近有说法称找到了相关证据——但谜团远未解开。事实上，我们在寻找宇宙射线加速的孤立区域时，可能完全走错了方向。
