A pair of astrophysicists at Universidad Nacional Autonoma de Mexico has found, via study of data from the low-Earth orbiting Fermi Gamma-ray Space Telescope, regular gamma radiation pulses emanating from around the black hole (at the center of the Milky Way galaxy Sagittarius A*). Gustavo Magallanes-Guijón and Sergio Mendoza have written a paper describing their findings, published on the arXiv preprint server.
