Null geodesics in the Reissner-Nordstr\"om Anti-de Sitter black holes

Understand

In this work we address the study of null geodesics in the background of Reissner-Nordstr\"om Anti de Sitter black holes.

• We compute the exact trajectories in terms of elliptic functions of Weierstrass, obtaining a detailed description of the orbits in terms of charge, mass and the cosmological constant.
• The trajectories of the photon are classified using the impact parameter.