lecture - Ettore Majorana - Infn

Moreover, we can use gravitational waves and neutrinos to identifycore-collapse events that do not lead to a strong electromagneticdisplay. This scenario may occur through the extinction of thesupernova light by intervening material, and/or through “failingsupernovae” in which no, or only a very weak, explosion occursand which may be the birth sites of stellar-mass black holes. Aneutrino and gravitational-wave coincidence, in the absence of anoptical signal, would provide smoking-gun evidence for this scenario.It is worth noting that the rate of such failed supernovae may becomparable to the rate of supernovae with optical signals.C. S. Kochanek, J. F. Beacom, M. D. Kistler, J. L. Prieto, K. Z. Stanek, T. A.Thompson, H. Y¨uksel, 2008, Astrophys. J., 684, 1336.