SN 2023ixf is a type II-L supernova located in the Pinwheel Galaxy. It was first observed on 19 May 2023 by KÅichi Itagaki and immediately classified as a type II supernova. Initial magnitude at discovery was 14.9. From Wikipedia
The unexpected absence of gamma rays from supernova SN 2023ixf prompts a reevaluation of cosmic ray production models.