  Scalar Tensor Vector Gravity (STVG) is an alternative theory of gravitation
that has successfully explained the rotation curves of nearby galaxies, the
dynamics of galactic clusters, and cosmological data without dark matter, but
has hardly been tested in the strong gravity regime. In this work, we aim at
building radiative models of thin accretion disks for both Schwarzschild and
Kerr black holes in STVG theory. In particular, we study stable circular
equatorial orbits around stellar and supermassive black holes in Schwarzschild
and Kerr STVG spacetimes. We also calculate the temperature and luminosity
distributions of accretion disks around these objects. We find that accretion
disks in STVG around stellar and supermassive black holes are colder and less
luminous than in GR. The spectral energy distributions obtained do not
contradict current astronomical observations.
