Investigation of the Explodability of Massive Stars with Spectral Two-moment Neutrino Transport in Spherical Symmetry
- 1University of Mazandaran
Abstract
We investigate the explodability of core-collapse supernova progenitors with zero-age main-sequence (ZAMS) masses of 9–25 M ⊙ using 1D hydrodynamical simulations with Flash-X and the DG-IMEX method of thornado . We assess one- and two-parameter explosion criteria and their connection to the internal structure of massive stars. We identify two classes of explosion outcomes. Class I requires the shock to pass the bottom of the Si/O interface together with an increasing advection-to-heating timescale ratio, while Class II follows the density-jump and shock-surge criterion, providing a less restrictive condition associated with the potential effects of multidimensional convection. The compactness parameter alone does not provide a unique measure of explodability and shows strong nonmonotonicity. The two-parameter compactness space ( ξ 1.5 , ξ 2.5 ) provides a better classification, although some discrepancies remain. We find that the M ₄ – μ ₄ M ₄ criterion predicts our outcomes with only ∼60%–80% accuracy, lower than previously reported. Finally, the critical relation between neutrino luminosity and mass accretion rate differs between the two classes: M ̇ ∝ L ν 3 for Class I , while Class II gives M ̇ ∝ L ν 1.25 – L ν 2.36 , with the latter close to the classical M ̇ ∝ L ν 2.3 scaling.
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BibTeX
@article{taghiniyarami2026investigation,
title = {{Investigation of the Explodability of Massive Stars with Spectral Two-moment Neutrino Transport in Spherical Symmetry}},
author = {Khodayar Taghiniyarami and Alireza Khesali and Azar Khosravi},
journal = {The Astrophysical Journal},
year = {2026},
month = oct,
doi = {10.3847/1538-4357/aea09a},
url = {https://iopscience.iop.org/article/10.3847/1538-4357/aea09a},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Investigation of the Explodability of Massive Stars with Spectral Two-moment Neutrino Transport in Spherical Symmetry
AU - Khodayar Taghiniyarami
AU - Alireza Khesali
AU - Azar Khosravi
PY - 2026
DA - 2026/10/12
JO - The Astrophysical Journal
DO - 10.3847/1538-4357/aea09a
UR - https://iopscience.iop.org/article/10.3847/1538-4357/aea09a
AB - We investigate the explodability of core-collapse supernova progenitors with zero-age main-sequence (ZAMS) masses of 9–25 M ⊙ using 1D hydrodynamical simulations with Flash-X and the DG-IMEX method of thornado . We assess one- and two-parameter explosion criteria and their connection to the internal structure of massive stars. We identify two classes of explosion outcomes. Class I requires the shock to pass the bottom of the Si/O interface together with an increasing advection-to-heating timescale ratio, while Class II follows the density-jump and shock-surge criterion, providing a less restrictive condition associated with the potential effects of multidimensional convection. The compactness parameter alone does not provide a unique measure of explodability and shows strong nonmonotonicity. The two-parameter compactness space ( ξ 1.5 , ξ 2.5 ) provides a better classification, although some discrepancies remain. We find that the M ₄ – μ ₄ M ₄ criterion predicts our outcomes with only ∼60%–80% accuracy, lower than previously reported. Finally, the critical relation between neutrino luminosity and mass accretion rate differs between the two classes: M ̇ ∝ L ν 3 for Class I , while Class II gives M ̇ ∝ L ν 1.25 – L ν 2.36 , with the latter close to the classical M ̇ ∝ L ν 2.3 scaling.
SN - 0004-637X
SN - 1538-4357
ER -