“黑洞加速”可分为两类现象。
第一类是黑洞环境对物质与粒子的加速：旋转黑洞的吸积盘与强磁场通过Blandford–Znajek机制或Penrose过程，把黑洞自旋能和吸积能转化为电磁能和动量，产生双向相对论性喷流。
磁重联、冲击波和湍流可在喷流与吸积盘中进一步加速粒子，产生射电、X射线与伽玛射线，并贡献高能宇宙线的来源。
第二类是黑洞自身的运动加速：双黑洞并合时非对称的引力波发射会给予合并产物“反冲”速度（kick），理论值可达数百至数千公里每秒，极端情况下黑洞可被踢出宿主星系；此外，多体相互作用和引力弹弓也能改变黑洞速度与轨道。
观测证据包括相对论性喷流的超光速视运动、类星体与活动星系核的快速变动，以及疑似被踢出的活动黑洞候选。
黑洞加速过程既是高能天体物理的能量发动机，也通过物质与能量的输送影响星系的形成与演化。
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