Astronomers have identified 20 ultraviolet-emitting supernova remnants in the Andromeda galaxy
The positions of the 20 SNRs with detected diffuse ultraviolet emission (red squares) and 5 SNRs with potential, but confounded, diffuse emission (blue squares), superimposed on the image of the Andromeda Galaxy in filter F148W. Credit: Leahy et al., 2023 Using the AstroSat satellite, astronomers from the University of Calgary, Canada, have located 20 supernova … Read more