“Hypernova” Radio Remnants

Abstract

Abstract. If recently discovered hypernova events are intrinsically energetic explosions of stars with a kinetic energy output of E K~1 0 52 ergs than they can produce very large diameter (up to 500 pc) nonthermal radio shells. The properties of such shells are modelled and compared with the observational data on the large diameter supernova remnants (SNRs). One real candidate for the hypernova remnant is found. This is the supernova remnant N7793-S26 in the galaxy NGC 7793 (Pannuti et al. 2002).