Multiwavelength studies of G298.6$-$0.0: An old GeV supernova remnant interacting with molecular clouds

Paul K. H. Yeung, Aya Bamba, Hidetoshi Sano

Hadronic $\gamma$-ray sources associated with supernova remnants (SNRs) can serve as stopwatches for the escape of cosmic rays from SNRs, which gradually develops from highest-energy pa…