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arXiv · 1611.05859

Crucial Physical Dependencies of the Core-Collapse Supernova Mechanism

Adam Burrows·David Vartanyan·Joshua C. Dolence·M. Aaron Skinner·David Radice
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Abstract

We explore with self-consistent 2D F{\sc{ornax}} simulations the dependence of the outcome of collapse on many-body corrections to neutrino-nucleon cross sections, the nucleon-nucleon bremsstrahlung rate, electron capture on heavy nuclei, pre-collapse seed perturbations, and inelastic neutrino-electron and neutrino-nucleon scattering. Importantly, proximity to criticality amplifies the role of even small changes in the neutrino-matter couplings, and such changes can together add to produce outsized effects. When close to the critical condition the cumulative result of a few small effects (including seeds) that individually have only modest consequence can convert an anemic into a robust explosion, or even a dud into a blast. Such sensitivity is not seen in one dimension and may explain the apparent heterogeneity in the outcomes of detailed simulations performed internationally. A natural conclusion is that the different groups collectively are closer to a realistic understanding of the mechanism of core-collapse supernovae than might have seemed apparent.

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Adam Burrows, David Vartanyan, Joshua C. Dolence, M. Aaron Skinner, David Radice. 2018-01-26. Crucial Physical Dependencies of the Core-Collapse Supernova Mechanism. https://doi.org/10.1007/s11214-017-0450-9

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