Superluminous supernovae are rare stellar explosions that shine 10 to 100 times brighter than ordinary supernovae, peaking at enormous optical luminosities. The energy source driving them is still unknown, but this preprint explores the idea that they are powered by a newly formed, rapidly spinning magnetar. The study is a theoretical case study of SN 2017egm, the nearest known example; researchers created a model of the coupled magnetar-wind-nebula-ejecta system, tracking pair production and particle injection to predict both light and neutrino emissions. It is not peer-reviewed work, relies on a single-event case study rather than a large sample, and depends on several modeling assumptions about the magnetar's properties. The model's high-energy gamma-ray predictions match Fermi LAT observations of SN 2017egm. For neutrinos, the authors conclude that stacking data from many such events spotted by the upcoming Vera C. Rubin Observatory could yield a 3-sigma detection with future neutrino telescopes within roughly a decade. Source: https://arxiv.org/abs/2603.24655