黑洞不仅是吞噬物质的天体，也是宇宙中最强大的“加速器”之一。
靠近黑洞时，深重的引力势能被转化为动能，落入的物质在吸积盘中形成高速湍流并与磁场耦合；在自转的Kerr黑洞周围，框架拖曳效应与彭罗斯过程可提取旋转能，把粒子推进到相对论速度。
电磁机制如Blandford–Znajek过程借助强磁场将黑洞旋转能转化为双极喷流，产生延伸数千至数百万光年的高速喷流和高能宇宙射线。
这些加速作用在X射线、伽马射线和射电波段留下显著信号，是解释活动星系核、类星体与伽马射线暴等高能现象的关键。
尽管将黑洞用于推进器在科幻中常被描绘，现实中因环境极端与工程困难仍不可行，但对黑洞加速机制的研究持续推动我们对高能宇宙的理解。
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