A newborn spider system at the core of a radio shell: Evidence of a low-energy supernova

In a search for radio nebulae with a low surface brightness within the ASKAP--EMU survey, we discovered a faint radio shell, DR3 distance of 267,pc and correspondingly low X-ray luminosity (3times1031,erg,s^-1) cast doubt on the LMXB classification. Neither radio nor X-ray pulsations are detected. Chance alignments between radio shell, central radio source, optical star, γ-ray, and X-ray sources appear unlikely. By combining all currently available evidence, we conclude that and its central point radio source at the position of the soft γ-ray source The central radio source is spatially coincident with a previously known low-mass X-ray binary (LMXB) with an M-type donor star. However, the newly determined Gaia is a remnant of a low-energy core-collapse explosion of an intermediate-mass star (∼8M_⊙$) in a binary system with an M-type secondary that remained bound after the explosion. In this scenario, is a supernova remnant, while the central $γ- and X-ray source is associated with a young neutron star whose pulsar wind interacts with its M-type stellar companion, making a nascent spider-type X-ray binary.