Superradiance in Modified Gravity (MOG)

Understand

We consider the case of rotating black holes in a dark-matter-emulating theory of gravity called MOG.

• The latter introduces a gravitational vector field with an associated gravitational charge proportional to the black hole mass and a scalar field in place of the gravitational constant.
• The resulting black hole metrics resemble the Kerr-Newman geometry and enjoy superradiant scattering.
• MOG, however, presents important new features.