The morphology of supernova remnant G0.9+0.1 implies explosion by jittering-jets

Abstract: I examine the morphology of the core-collapse supernova (CCSN) remnant (SNR) G0.9+0.1 and reveal a point-symmetrical morphology that implies shaping by three or more pairs of jets, as expected in the jittering jets explosion mechanism (JJEM). The large northwest protrusion, the ear (or lobe), has two bright rims. I compare this ear with its rims to an ear with three rims of a jet-shaped planetary nebula and jets from an active galactic nucleus that shaped several rims on one side. Based on this similarity, I argue that two jets or more shaped the northwest ear of SNR G0.9+0.1 and its two rims. I identified the bright region south of the main shell of SNR G0.9+0.1 as a jet-shaped blowout formed by a jet that broke out from the main SNR shell. I base this on the similarity of the blowout of SNR G0.9+0.1 with that of SNR G309.2-00.6, argued in the past to be shaped by jets. I identify four symmetry axes along different directions that compose the point-symmetric morphology of SNR G0.9+0.1. I show that the morphological features of holes, granular texture, and random filaments exist in CCSNe and planetary nebulae and are unlikely to result from some unique processes in CCSNe. These structures result from similar instabilities in the JJEM and the neutrino-driven explosion mechanism and, unlike a point-symmetric morphology, cannot determine the explosion mechanism. Identifying SNR G0.9+0.1 as a new point-symmetric CCSN strengthens the JJEM as the primary explosion mechanism of CCSNe.