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Electron capture rates on nuclei and implications for stellar core collapse

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arxiv astro-ph/0302459 v1 pith:XL5RCQOJ submitted 2003-02-21 astro-ph nucl-th

K. Langanke , G. Martinez-Pinedo , J. M. Sampaio , D. J. Dean , W. R. Hix , O. E. B. Messer , A. Mezzacappa , M. Liebendoerfer
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H.-Th. Janka M. Rampp
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classification astro-phnucl-th
keywords capturecollapsecoreelectronnucleiratescapturesfree
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Supernova simulations to date have assumed that during core collapse electron captures occur dominantly on free protons, while captures on heavy nuclei are Pauli-blocked and are ignored. We have calculated rates for electron capture on nuclei with mass numbers A=65-112 for the temperatures and densities appropriate for core collapse. We find that these rates are large enough so that, in contrast to previous assumptions, electron capture on nuclei dominates over capture on free protons. This leads to significant changes in core collapse simulations.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Bifurcated Impact of Neutrino Fast Flavor Conversion on Core-collapse Supernovae Informed by Multi-angle Neutrino Radiation Hydrodynamics

    astro-ph.HE 2026-01 unverdicted novelty 6.0 of 10

    Fast flavor conversion of neutrinos bifurcates supernova explosion outcomes: it aids shock revival in low-mass progenitors but inhibits it in higher-mass ones, controlled by mass accretion rate.

  2. Comparative Testing of Subgrid Models for Fast Neutrino Flavor Conversions in Core-collapse Supernova Simulations

    astro-ph.HE 2025-06 conditional novelty 6.0 of 10

    A 1D supernova simulation with four-species BGK subgrid modeling shows that three-species assumptions overestimate flavor conversion and that semi-implicit time integration is the most reliable.

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