The initial kinetic energy of the core was
21Icωc2=21(52mrc2)T24π2=54m(Tcπrc)2 By analogy, the kinetic energy of the neutron star will be
21Inωn2=54m(Tnπrn)2 The work done by supernova per kilogram of mass is
mW=mΔKE=54π2[(Tnrn)2−(Tcrc)2]= =1340 MJ/kg.
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