Effect of the cosmological constant on the bending of light and the cosmological lens equation
Effect of the cosmological constant on the bending of light and the cosmological lens equation
We revisit the effect of cosmological constant $\Lambda$ on the light deflection and its role in the cosmological lens equation. First, we re-examine the motion of photon in the Schwarzschild spacetime, and explicitly describe the trajectory of photon and deflection angle $\alpha$ up to the second-order in $G$. Then the …