A Rotating Collapsar and Possible Interpretation of the LSD Neutrino   Signal from SN 1987A
  We consider an improved rotational mechanism of the explosion of a collapsing supernova. We show that this mechanism leads to two-stage collapse with a phase difference of \sim 5 h. Based on this model, we attempt a new interpretation of the events in underground neutrino detectors on February 23, 1987, related to the supernova SN 1987A. 
V.S. Imshennik (1), O.G. Ryazhskaya (2) ((1) ITEP Moscow, (2) INR RAS   Moscow)