It started taking data in 2004, and in 2007 Auger researchers announced that cosmic rays with energies above about 60 exa - electron volts (EeV) appeared to come from the fiery hearts of galaxies thought to contain supermassive black holes feeding on in - falling debris, so - called «active galactic nuclei.» (sciencemag.org)
For instance, in the crowded heart of a galaxy, black holes may have more opportunities to pair up with nearby stars — and then slurp material from them, generating x rays in the process — than they do in sparser regions of the star group. (sciencemag.org)
Research has shown these massive jets are powered by the huge energy released from the energetic hearts of galaxies. (redorbit.com)