Physics – Nuclear Physics – Nuclear Theory
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005oicc.conf....3m&link_type=abstract
OPEN ISSUES IN CORE COLLAPSE SUPERNOVA THEORY . Held 22-24 June 2004 in National Institute for Nuclear Theory, University of Was
Physics
Nuclear Physics
Nuclear Theory
1
Scientific paper
More than four decades have elapsed since modeling of the core collapse supernova mechanism began in earnest. To date, the mechanism remains illusive, at least in detail, although significant progress has been made in understanding these multi-scale, multi-physics events. One-, two-, and three-dimensional simulations of or relevant to core collapse supernovae have shown that (1) neutrino transport, (2) fluid instabilities, (3) rotation, and (4) magnetic fields, together with proper treatments of (5) the sub- and super- nuclear density stellar core equation of state, (6) the neutrino interactions, and (7) gravity are all important, quantitatively and qualitatively. The importance of these "ingredients" applies to both the explosion mechanism and to phenomena directly associated with the mechanism, such as neutron star kicks, neutrino and gravitational wave emission, and spectropolarization. Not surprisingly, current two- and three-dimensional models have yet to include (1)-(4) with sufficient realism. One-dimensional spherically symmetric models have achieved a significant level of sophistication but, by definition, cannot incorporate (2)-(4), except phenomenologically. Fully general relativistic spherically symmetric simulations with Boltzmann neutrino transport do not yield explosions, demonstrating that some combination of (2), (3), and (4) is required to achieve this. Systematic layering of the dimensionality and the physics will be needed to achieve a complete understanding of the supernova mechanism and phenomenology. The past modeling efforts alluded to above have illuminated that core collapse supernovae may be neutrino driven, MHD driven, or both, but uncertainties in the current models prevent us from being able to answer even this most basic question. And it may be that more than one possibility is realized in Nature.
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