2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/12779In this paper we give a brief systematic study of different models of astrophysical point sources of ultra high energy (\ge 1 TeV) neutrinos.18 pages, 5 figures, uses Revtex, Submitted to Astroparticle PhysicsAstrophysicsHigh Energy Physics - Phenomenologytext