Abstract

I will present evidence in core-collapse supernova remnants for the action of jets in the supernova explosion process. Two main types of observations appear in many, but not all, core-collapse supernova remnants: (i) the well-established presence of a pair of opposite `ears’ and (ii) the recently identified point-symmetrical structure in 15 remnants, including SN 1987A , Cassiopeia A, Vela, and the Crab Nebula. The pair of opposite ears suggests that two opposite jets inflate the ears. The point-symmetrical structure results from two or more pairs of jets along different axes, as the jittering jets explosion mechanism (JJEM) predicts. I will compare the JJEM with the neutrino-driven mechanism and conclude that the neutrino-driven mechanism comes short in explaining observations, leaving the JJEM as the primary explosion mechanism of CCS Ne. The JJEM has some unique signatures in addition to its point-symmetric morphology, such as gravitational waves and energetic explosions. I will comment on the overrated popularity of the neutrino-driven mechanism in scientific meetings and literature.