Time Delay of Light in the Gravitational lensing of Supermassive Black Holes in Dark Matter Halos

Understand

The dark matter halo has non-negligible effects on the gravitational lensing of supermassive black hole in the galaxy center.

• Our work presents a study on the time-delay of light in gravitational lensing of black holes enclosed by dark matter halos.
• To provide a precise description on the distribution of dark matter in galaxies, we choose several famous phenomenological dark matter halo models in astrophysics, including the NFW, Beta, Burkert and Moore models, to carry out the present study.
• Through numerically calculating the time-delay of light in gravitational lensing, a comparative analysis of the dark matter effects within different halo models has been performed.