G7.7–3.7: A Young Supernova Remnant Probably Associated with the Guest Star in 386 CE (SN 386)
Ping Zhou et al 2018 ApJL 865 L6
XMM-Newton observations of the supernova remnant SNR G7.7−3.7 suggest that its position and age are compatible with a supernova origin noted in Chinese historical records as a “guest star” in 386 CE.