Gravitomagnetic bending angle of light with finite-distance corrections in stationary axisymmetric spacetimes

Understand

By using the Gauss-Bonnet theorem, the bending angle of light in a static, spherically symmetric and asymptotically flat spacetime has been recently discussed, especially by taking account of the finite distance from a lens object to a light source and a receiver [Ishihara, Suzuki, Ono, Asada, Phys.

• Rev.
• D 95, 044017 (2017)].
• We discuss a possible extension of the method of calculating the bending angle of light to stationary, axisymmetric and asymptotically flat spacetimes.