2016/11/30 by A. Burrows, Adam Burrows, David Vartanyan +7 · 3 citations
Earth and Planetary Sciences · Physics and Astronomy · #Earth Systems and Cosmic Evolution #Gamma-ray bursts and supernovae #Neutrino Physics Research #astro-ph.HE #astro-ph.SR
paper · pdf · doi:10.1007/s11214-017-0450-9
published as Space Science Reviews, Volume 214, 33, 2018 · 25 pages; 10 figures
openalex publication_date 2018/01/23 · arxiv created 2018/01/26 · arxiv updated 2018/01/30 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/05
We explore with self-consistent 2D F\scornax 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.