Impacts of photon bending on observational aspects of Two Component   Advective Flow
  Nature of photon trajectories in a curved spacetime around black holes are studied without constraining their motion to any plane. Impacts of photon bending are separately scrutinized for Keplerian and CENBOL components of Two Component Advective Flow (TCAF) model. Parameters like Red shift, Bolometric Flux, temperature profile and time of arrival of photons are also computed. 
Arka Chatterjee and Sandip K. Chakrabarti
astro-ph.HE