2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/111188In this paper we derived Hawking radiation as a tuneling of massless particles through a non-singular horizon in the s-wave approximation. The back reaction of emitted modes on the background black hole geometry is self-consistently taken into account. This is arXive copy of the paper published in the Russian journal "Gravitation and Cosmology" in 1999.This is arXiv submission of the paper published in the Russian journal Gravitation and Cosmology in 1999General Relativity and Quantum Cosmologytext