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

Question

Quizplus · Accepted Answer

The accretion disk of infalling matter provides the radiate energy for the central engine of active galaxies and quasars. As matter falls towards the black hole, it forms an accretion disk, and the gravitational energy released as matter falls closer and closer towards the black hole powers the emission of radiation.

Not Only Does the Central Engine of Active Galaxies and Quasars