B5)Please no hand writing solution

The galaxy is gravitationally lensing a background quasar, with an alignment that has produced four lensed quasar images. Four supernovae have gone off in the galaxy simultaneously. The galaxy is being orbited by four identical satellite galaxies, and the only way the orbit is stable is for them to be symmetrically positioned as shown. The central galaxy hosts four quasars. The galaxy is in the process of merging with four other galaxies in a very symmetric manner.(24) Problem 48: This image shows an interesting phenomenon around a galaxy core. The galaxy itself, in the center with a redshift of about 0.35, has largely been redshifted out of visible wavelengths, allowing the four bright points of tight around it to be dramatically seen, What is the best (most likely) explanation for what we are seeing here