The supernova remnant J0450.4-7050 possesses a jets-shaped point-symmetric morphology

TL;DR

This paper identifies a point-symmetric, jet-shaped morphology in the supernova remnant J0450.4-7050, supporting the jittering jets explosion mechanism as the primary cause of core-collapse supernovae.

Contribution

It provides observational evidence linking jet-shaped structures in a supernova remnant to the jittering jets explosion mechanism, strengthening its validity over neutrino-driven models.

Findings

Identification of three pairs of energetic jets in the remnant.

Morphological features consistent with jet shaping, not ambient interaction.

Supports the jittering jets explosion mechanism as the primary supernova explosion process.

Abstract

By examining recently published images in different wavelengths, I identify a point-symmetric morphology in the Large Magellanic Cloud core-collapse supernova (CCSN) remnant (CCSNR) J0450.4-7050 (SNR 0450-70.9; nicknamed Veliki), which I attribute to at least three pairs of energetic jets that participated in the explosion of the progenitor in the framework of the jittering jets explosion mechanism (JJEM). Two pairs of ears, a pair of blowouts in the north and south along the long axis of this SNR, and a pair of dents compose the point symmetric morphology. The fact that the symmetry axes of two pairs include pairs of opposite structural features in the inner ejecta implies that the shaping is by jets and not due to an interaction with an ambient material. While the JJEM predicts such morphologies, the competing neutrino-driven mechanism cannot account for point-symmetric morphologies. This study provides strong support for the claim that the JJEM is the primary CCSN explosion mechanism.