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Crucial Physical Dependencies of the Core-Collapse Supernova Mechanism

Author(s): Burrows, Adam S; Vartanyan, D; Dolence, JC; Skinner, MA; Radice, D

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Abstract: We explore with self-consistent 2D FORNAXsimulations the dependence of theoutcome of collapse on many-body corrections to neutrino-nucleon cross sections, thenucleon-nucleon bremsstrahlung rate, electron capture on heavy nuclei, pre-collapse seedperturbations, and inelastic neutrino-electron and neutrino-nucleon scattering. Importantly,proximity to criticality amplifies the role of even small changes in the neutrino-matter cou-plings, and such changes can together add to produce outsized effects. When close to thecritical condition the cumulative result of a few small effects (including seeds) that individ-ually have only modest consequence can convert an anemic into a robust explosion, or evena dud into a blast. Such sensitivity is not seen in one dimension and may explain the apparentheterogeneity in the outcomes of detailed simulations performed internationally. A naturalconclusion is that the different groups collectively are closer to a realistic understanding ofthe mechanism of core-collapse supernovae than might have seemed apparent.
Publication Date: Feb-2018
Electronic Publication Date: 23-Jan-2018
Citation: Burrows, A, Vartanyan, D, Dolence, JC, Skinner, MA, Radice, D. (2018). Crucial Physical Dependencies of the Core-Collapse Supernova Mechanism. ßr, 214 (33 - 33. doi:10.1007/s11214-017-0450-9
DOI: doi:10.1007/s11214-017-0450-9
Type of Material: Journal Article
Journal/Proceeding Title: Space Science Reviews
Version: Final published version. This is an open access article.



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