2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/159968We study SN1987A neutrino events through a likelihood analysis with one-component (cooling) and two-component (accretion and cooling) emission model. We show that there is a 3.2 sigma hint for the initial accretion phase.6 pages, 3 figuresAstrophysicstext