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Supernova models with slow energy pumping and galactic supernova remnants
Authors:V P Utrobin
Institution:(1) Institute of Applied Mathematics, U.S.S.R. Academy of Sciences, Moscow, USSR
Abstract:The study of supernova (SN) models with slow energy pumping is continued. At maximum luminosity the main characteristics of a SN are shown to be independent of the initial structure of the model (Table I, Figure 1). However, they depend on the massM e of the envelope, and on the intensity of energy pumpingL epsiv, with an increase ofM e leading qualitatively to the same changes in the SN parameters as a decrease inL epsiv (Table I, Figures 2 and 3). A simple relationship connecting the important SN parameters is obtained (Equation (6)). From the inflection of the color indexB-V curve, the possibility of deriving the characteristic time of energy pumping with intensityL epsiv sim 1044 erg s–1 is pointed out. The comparison of the extragalactic type I SN observations with the results of calculations leads to the estimate ofM e ap 0.3–0.7Modot.An investigation of the galactic type I SN remnants is carried out (Table III). The estimate ofM e ap 0.2–0.3M odot is obtained for the remnants of supernovae SN 1006, SN 1572, and SN 1604. It completely fits the results for the extragalactic type I SNs. The total initial mass of SN 1604 presupernova was shown to be at least about 7M odot.It was established that the Crab nebula resulted from the outburst of a peculiar SN. The unique properties of such SNs, including SN 1054, are due to the low intensity of energy pumping (L odot sim 1042 erg s–1). The mass of the envelope of the Crab nebula is evaluated to beM e ap 0.7M odot. SN 1054 was shown to have m max v =–4 m . 0 at maximum luminosity.
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