ANTIMATTER X-RAY BINARIES. “Gamma radiation with signature 511 KeV from positron-electron annihilation has been observed throughout the centre of the Milky Way galaxy since the 1970’s. The source of the positron emission coincides with a region with many binary star systems containing neutron stars or black holes, known as ‘hard low-mass X-ray binaries’.”
https://lnkd.in/dhrW–56