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

Published online by Cambridge University Press:  30 March 2016

S. A. Colgate  and
A. G. Petschek
S. A. Colgate
Affiliation:
University of California, Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87545, USA
A. G. Petschek
Affiliation:
New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA

Extract

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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.

Type
Joint Discussion
Information
Highlights of Astronomy , Volume 5: Highlights of Astronomy. As presented at the XVIIth General Assembly of the IAU, 1979 , 1980 , pp. 517 - 519
Copyright
Copyright © Cambridge University Press 1980

References

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