Not only does the central engine of active galaxies and quasars require a black hole, but also ________ to provide the radiate energy

A) globular clusters for food
B) a very strong magnetic field from neutron stars
C) a source of high-energy electrons for synchrotron radiation
D) an accretion disk of infalling matter
E) a high rate of rotation for the black hole


D

Physics & Space Science

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