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Collapse-induced thermonuclear explosion (CITE) may explain core-collapsesupernovae (CCSNe). We present a preliminary analysis of the neutrino signalpredicted by CITE and compare it to the neutrino burst of SN1987A. For strongCCSNe, as SN1987A, CITE predicts a proto-neutron star (PNS) accretion phase,accompanied by the corresponding neutrino luminosity, that can last a fewseconds and that is cut-off abruptly by black hole (BH) formation. The neutrinoluminosity can later be revived by accretion disc emission after a dead time offew to a few ten seconds. In contrast, the neutrino mechanism for CCSNepredicts a shorter PNS accretion phase, followed by a slowly declining PNScooling luminosity. We repeat statistical analyses used in the literature tointerpret the neutrino mechanism, and apply them to CITE. The first 1-2 sec ofthe neutrino burst are equally compatible with CITE and with the neutrinomechanism. However, the data hints to a luminosity drop at t=2-3 sec, in sometension with the neutrino mechanism while being naturally attributed to BHformation in CITE. The occurrence of neutrino events at 5 sec in SN1987Asuggests that the accretion disc formed by that time. We perform 2D numericalsimulations, showing that CITE may be able to accommodate this disc formationtime while reproducing the ejected $^{56}$Ni mass and ejecta kinetic energywithin factors 2-3 of observations. We estimate the disc neutrino luminosityand show that it can roughly match the data. This suggests that direct BHformation is compatible with the neutrino burst of SN1987A. With currentneutrino detectors, the neutrino burst of the next Galactic CCSN may give usfront-row seats to the formation of an event horizon in real time. Access tophenomena near the event horizon motivates the construction of a few Megatonneutrino detector that should observe extragalactic CCSNe on a yearly basis.

Neutrino Signal of Collapse-Induced Thermonuclear Supernovae: The Case for Prompt Black Hole Formation in SN1987A