TRAJECTORIES AND DEFLECTIONS OF LIGHT IN A GRAVITATIONAL FIELD GENERATED BY A MASSIVE OBJECT
This site offers a comprehensive study of photon trajectories around massive objects and black holes, both in spherical symmetry (classical mechanics or Schwarzschild metric) and in rotation or axial symmetry (Kerr spacetime). It provides a detailed analysis of gravitational light bending, null geodesics, the radial and angular effective potentials, the Lense–Thirring effect, as well as photon spheres, their orbits, and black hole shadows. Illustrations, interactive visualizations, and numerical simulations complement the analysis, exploring light deflection in a wide range of astrophysical configurations, including theoretical regimes involving over-extreme Kerr objects.
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