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• W3100702302 endingPage "31" @default.
• W3100702302 startingPage "31" @default.
• W3100702302 abstract "Collapse-induced thermonuclear explosion (CITE) may explain core-collapse supernovae (CCSNe). We present a preliminary analysis of the neutrino signal predicted by CITE and compare it to the neutrino burst of SN1987A. For strong CCSNe, as SN1987A, CITE predicts a proto-neutron star (PNS) accretion phase, accompanied by the corresponding neutrino luminosity, that can last a few seconds and that is cut-off abruptly by black hole (BH) formation. The neutrino luminosity can later be revived by accretion disc emission after a dead time of few to a few ten seconds. In contrast, the neutrino mechanism for CCSNe predicts a shorter PNS accretion phase, followed by a slowly declining PNS cooling luminosity. We repeat statistical analyses used in the literature to interpret the neutrino mechanism, and apply them to CITE. The first 1-2 sec of the neutrino burst are equally compatible with CITE and with the neutrino mechanism. However, the data hints to a luminosity drop at t=2-3 sec, in some tension with the neutrino mechanism while being naturally attributed to BH formation in CITE. The occurrence of neutrino events at 5 sec in SN1987A suggests that the accretion disc formed by that time. We perform 2D numerical simulations, showing that CITE may be able to accommodate this disc formation time while reproducing the ejected $^{56}$Ni mass and ejecta kinetic energy within factors 2-3 of observations. We estimate the disc neutrino luminosity and show that it can roughly match the data. This suggests that direct BH formation is compatible with the neutrino burst of SN1987A. With current neutrino detectors, the neutrino burst of the next Galactic CCSN may give us front-row seats to the formation of an event horizon in real time. Access to phenomena near the event horizon motivates the construction of a few Megaton neutrino detector that should observe extragalactic CCSNe on a yearly basis." @default.
• W3100702302 created "2020-11-23" @default.
• W3100702302 creator A5050331266 @default.
• W3100702302 creator A5073453189 @default.
• W3100702302 date "2016-08-25" @default.
• W3100702302 modified "2023-09-25" @default.
• W3100702302 title "NEUTRINO SIGNAL OF COLLAPSE-INDUCED THERMONUCLEAR SUPERNOVAE: THE CASE FOR PROMPT BLACK HOLE FORMATION IN SN 1987A" @default.
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• W3100702302 doi "https://doi.org/10.3847/0004-637x/828/1/31" @default.
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