  In the framework of thermal quantization of radial geodesics completely
confined behind the horizons we calculate the entropy of BTZ black hole in
agreement with the Bekenstein--Hawking relation. Particles in the BTZ black
hole occupy the only quantum ground level. The quantization allow us to find a
linear dependence of black hole mass versus its orbital momentum.

General Relativity and Quantum Cosmology;Astrophysics;High Energy Physics - Theory