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We find that the remnant of supernova (SN) 1987A share some morphologicalfeatures with four supernova remnants (SNRs) that have signatures of shaping byjets, and from that we strengthen the claim that jets played a crucial role inthe explosion of SN 1987A. Some of the morphological features appear also inplanetary nebulae where jets are observed. The clumpy ejecta bring us tosupport the claim that the jittering jets explosion mechanism can account forthe structure of the remnant of SN 1987A, i.e., SNR 1987A. We conduct apreliminary attempt to quantify the fluctuations in the angular momentum of themass that is accreted on to the newly born neutron star via an accretion diskor belt. The accretion disk/belt launches the jets that explode core collapsesupernovae (CCSNe). The relaxation time of the accretion disk/belt iscomparable to the duration of a typical jet-launching episode in the jitteringjets explosion mechanism, and hence the disk/belt has no time to relax. Wesuggest that this might explain unequal two opposite jets that later lead tounequal sides of the elongated structures in SNR of CCSNe. We reiterate ourearlier call for a paradigm shift from neutrino-driven explosion to ajet-driven explosion of CCSNe.

Explaining the morphology of supernova remnant (SNR) 1987A with the jittering jets explosion mechanism