2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/121215We report on the first results of self-consistent second order metric perturbations produced by a point particle moving in the Schwarzschild spacetime. The second order waveforms satisfy a wave equation with an effective source term build up from products of first order metric perturbations and its derivatives. We have explicitly regularized this source term at the particle location as well as at the horizon and at spatial infinity.4 pages, prepared for the proceedings of the 16th workshop on general relativity and gravitation, Niigata, Japan, Nov.27 - Dec.1, 2006General Relativity and Quantum Cosmologytext