出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The “collapsar” engine for gamma-ray bursts invokes as its energy source the failure of a normal
supernova and the formation of a black hole. Here we present the results of the first threedimensional
simulation of the collapse of a massive star down to a black hole, including the
subsequent accretion and explosion. The explosion differs significantly from the axisymmetric
scenario obtained in two-dimensional simulations; this has important consequences for the nucleosynthetic
yields. We compare the nucleosynthetic yields to those of hypernovae. Calculating
yields from three-dimensional explosions requires new strategies in post-process nucleosynthesis;
we discuss NuGrid’s plan for three-dimensional yields.
