Abstract
We propose a new mechanism for type II supernova explosions. An important element of the model is large-scale convection that arises due to non-equilibrium neutronization of the matter in the central region of the proto-neutron star. Our analytical estimates and numerical simulations of the convection rate are in good mutual agreement. Large-scale convection leads to the rapid transport of neutrinos from the center of the star to the bounce shock formed during the pause in the collapse of the stellar matter in the proto-neutron star. The mean neutrino energy is 30–50 MeV. We analyze the dependence of the mean neutrino energy on the size of the convection cells—“bubbles.” Our computations of the interaction between the neutrinos and the shock show that the velocity of the shock along the rotational axis of the star exceeds the escape velocity. Thus, explosion of the envelope and a supernova with a very asymmetrical envelope structure become possible, leading to the formation of a neutron star.
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Original Russian Text © I.V. Baikov, V.M. Suslin, V.M. Chechetkin, V. Bychkov, L. Stenflo, 2007, published in Astronomicheskiĭ Zhurnal, 2007, Vol. 84, No. 4, pp. 308–316.
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Baikov, I.V., Suslin, V.M., Chechetkin, V.M. et al. Radiation of a neutrino mechanism for type II supernovae. Astron. Rep. 51, 274–281 (2007). https://doi.org/10.1134/S1063772907040038
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DOI: https://doi.org/10.1134/S1063772907040038