What question did this study set out to answer?

To determine how post-explosion hydrodynamics shape final explosion energies, remnant masses, and nucleosynthetic yields across various progenitor stars.

October 27, 2021The Astrophysical JournalOpen Access

Post-explosion Evolution of Core-collapse Supernovae

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To determine how post-explosion hydrodynamics shape final explosion energies, remnant masses, and nucleosynthetic yields across various progenitor stars.
Conducted 46 two-dimensional hydrodynamical simulations using a simplified neutrino transport scheme across three progenitor masses (11.2, 15, and 27 solar masses).
Modeled 32 successful explosions for several seconds post-shock revival under varied neutrino heating efficiencies and progenitor rotation rates.
Estimated nucleosynthetic output for the 15-solar-mass progenitor model by correcting neutrino energies and luminosities to infer realistic electron fractions.
Demonstrated that conditions in the first seconds after shock revival govern final explosion energy, remnant mass, and ejecta properties, with late-time mass accretion driving substantial energy increases.
Identified stellar rotation and initial shock deformation as the primary factors regulating the intensity of late-stage mass accretion.
Found that sustained neutrino-driven winds develop only in specific simulations, demonstrating they are not an inevitable outcome of core-collapse events.

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Implication

Numerical simulation study reveals late-time mass accretion governs explosion energies in massive stars, indicating neutrino-driven winds are not universally produced.

Cite This Study

Witt et al. (2021) studied this question.

synapsesocial.com/papers/6a84b2897e01a96bc18e3c76 https://doi.org/10.3847/1538-4357/ac1a6d

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Implication

Numerical simulation study reveals late-time mass accretion governs explosion energies in massive stars, indicating neutrino-driven winds are not universally produced.

Post-explosion Evolution of Core-collapse Supernovae

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Post-explosion Evolution of Core-collapse Supernovae

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Implication

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