Origin of mysterious radio signal from space that flashes on and off every 8 minutes found

Astronomers have traced mysterious radio pulses repeating every eight minutes to a rare star system containing a white dwarf, the dense core of a dead star, and a star similar to Sun. The system, named GPM J071507−114153, was identified by researchers at Australia’s International Centre for Radio Astronomy Research. The signals appear for six hours before stopping for 26 hours.