Stellar core collapse and supernova
Massive stars that end their stable evolution as their iron cores collapse to a neutron star or black hole long been considered good candidates for producing Type II supernovae. For many years the outward propagation of the shock wave produced by the bounce of these iron cores has been studied as a possible mechanism for the explosion. For the most part, the results of these studies have not been particularly encouraging, except, perhaps, in the case of very low mass iron cores or very soft nuclear equations of state. The shock stalls, overwhelmed by photodisintegration and neutrino losses, and the star does not explode. More recently, slow late time heating of the envelope of the incipient neutron star has been found to be capable of rejuvenating the stalled shock and producing an explosion after all. The present paper discusses this late time heating and presents results from numerical calculations of the evolution, core collapse, and subsequent explosion of a number of recent stellar models. For the first time they all, except perhaps the most massive, explode with reasonable choices of input physics. 39 refs., 17 figs., 1 tab.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5375677
- Report Number(s):
- UCRL-92510; CONF-841238-1; ON: DE85017398; TRN: 85-021365
- Resource Relation:
- Conference: 12. Texas symposium of relativistic astrophysics, Jerusalem, Israel, 17 Dec 1984; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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GENERAL PHYSICS
SUPERNOVAE
STAR EVOLUTION
EQUATIONS OF STATE
GRAVITATIONAL COLLAPSE
NUCLEOSYNTHESIS
SHOCK WAVES
STAR MODELS
EQUATIONS
ERUPTIVE VARIABLE STARS
MATHEMATICAL MODELS
STARS
SYNTHESIS
VARIABLE STARS
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
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