https://www.sciencedaily.com/releases/2019/11/191127161255.htm > Astrophysicists believe that this high-energy radiation -- which makes neutron stars and black holes shine bright -- is generated by electrons that move at nearly the speed of light, but the process that accelerates these particles has remained a mystery. > Now, researchers at Columbia University have presented a new explanation for the physics underlying the acceleration of these energetic particles.