2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52189A structure of the radiation-ball which is identified as a Schwarzschild black hole is found out by investigating the backreaction of Hawking radiation into space-time. The structure consists of the radiation which is gravitationally bounded in the ball and of a singularity. The entropy of the radiation in the ball is proportional to the surface-area of the ball and nearly equals to the Bekenstein entropy. The Hawking radiation is regarded as a leak-out from the ball. There arises no information paradox because there exists no horizon in the structure.12 pages, 3 figuresHigh Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext