2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/101580The time-integrated luminosity and average energy of the neutrino emission spectrum are essential diagnostics of core-collapse supernovae. The SN 1987A electron antineutrino observations by the Kamiokande-II and IMB detectors are only roughly consistent with each other and theory. Using new measurements of the star formation rate history, we reinterpret the Super-Kamiokande upper bound on the electron antineutrino flux from all past supernovae as an excluded region in neutrino emission parameter space. A gadolinium-enhanced Super-Kamiokande should be able to jointly measure these parameters, and a future megaton-scale detector would enable precision studies.4 pages, 3 figures; minor revisions, accepted for publication in Phys. Rev. CAstrophysicsHigh Energy Physics - PhenomenologyNuclear Theorytext