Electromagnetic radiation emitted by high-energy charged relativistic particles (as electrons) when they are accelerated by a magnetic field (as in a nebula).

磁阻尼幅射；同步加速幅射(由高速的电子围绕一个磁场作螺旋形转动而产生的电磁幅射。如在同步加速器中或在某些银河星云中所发生者)。