Cosmological constant and Szekeres–Szafron metric

The present paper is devoted to analyzing light deflection caused by the presence of a cosmological constant in a space-time described by the Szekeres–Szafron metric. We use the orbital equation for light to calculate the deflection angle in gravitational lensing in the equatorial plane of the Szekeres–Szafron metric. The present study confirms that the cosmological constant has an effect on gravitational lensing.