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The Rayleigh-Taylor Instability Overturn of Supernova Cores during Bouncing and Resulting Neutrino Energy Release

  • S. A. Colgate (a1) and A. G. Petschek (a2)

Extract

We show that Rayleigh-Taylor convective overturn of the dynamically formed lepton-trapped core of a supernova is a likely outcome of three sequential events: (1) The bounce or weak reversal shock; (2) the diffusive and convective lepton release from the neutrino-sphere during a fraction of the reversal time (≌ 100 ms); and (3) the rapid (≤ 10 ms) Rayleigh-Taylor growth of the l = 2 mode of an initial rotational perturbation. The overturn releases gravitational energy corresponding to a differential trapped lepton pressure energy of 30 to 50 MeV/nucleon by P dV work in beta equilibrium in a fraction of a millisecond. The resulting kinetic energy of ≌ 7 × 1052 ergs is more than adequate to cause the observed supernova emission. Also, the sudden release of ≌ 7 × 1051 ergs of ˜ 10 MeV neutrinos from the neutrinosphere will cause adequate mass and energy ejection.

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References

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Wilson, J.R., 1979a, “Stellar Collapse and Supernova,” In Sources of Gravitational Radiation, ed. Surarr, L., Cambridge Univ. Press, Cambridge.
Wilson, J.R., 1979b, Ninth Texas Symposium on Relativistic Astrophysics, Munich, Germany.

The Rayleigh-Taylor Instability Overturn of Supernova Cores during Bouncing and Resulting Neutrino Energy Release

  • S. A. Colgate (a1) and A. G. Petschek (a2)

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