Using telescopes on the ground and in space, a team of astronomers has discovered a new type of exotic binary star in the system AR Scorpii. The rapidly spinning white dwarf star is powering electrons up to almost the speed of light. These high energy particles release blasts of radiation that lash the companion red dwarf star, and cause the entire system to pulse dramatically every 1.97 minutes with radiation ranging from the ultraviolet to radio... read here http://www.currentbase.xyz/2016/08/see-how-astronomers-discover-radio.html?m=1