High Energy2026-07-302 minarXiv:2607.27658expressBlack Holes: Neutrino FactoriesAt the centers of many galaxies lurk giant black holes. They are surrounded by dense clouds of hot plasma that emit a powerful X-ray glow.Chen Li·Francis HalzenHawking radiationJacob BekensteinJohn Archibald WheelerStephen Hawkingneutrinoprimordial black holeAccretion diskblack holeactive galactic nucleus👍👎☆SimplePopularAdvanced