Uncertainties in the production of iron-group nuclides in core-collapse supernovae from Monte Carlo variations of reaction rates

Abstract

Core-collapse supernovae, occurring at the end of massive star evolution, produce heavy elements, including those in the iron peak. Although the explosion mechanism is not yet fully understood, theoretical models can reproduce optical observations and observed elemental abundances. However, many nuclear reaction rates involved in explosive nucleosynthesis have large uncertainties, impacting the reliability of abundance predictions. To address this, we have previously developed a Monte Carlo-based nucleosynthesis code that accounts for reaction rate uncertainties and has been applied to nucleosynthesis processes beyond iron. Our framework is also well suited for studying explosive nucleosynthesis in supernovae. In this paper, we investigate 1D explosion models using the "PUSH method", focusing on progenitors with varying metallicities and initial masses around $M_{\mathrm{ZAMS}}=16M_{\odot }$. Detailed post-process nucleosynthesis calculations and Monte Carlo analyses are used to explore the effects of reaction rate uncertainties and to identify key reaction rates in explosive nucleosynthesis. We find that many reactions have little impact on the production of iron-group nuclei, as these elements are primarily synthesized in the nuclear statistical equilibrium. However, we identify a few "key reactions" that significantly influence the production of radioactive nuclei, which may affect astrophysical observables. In particular, for the production of ${}^{44}$Ti, we confirm that several traditionally studied nuclear reactions have a strong impact. However, determining a single reaction rate is insufficient to draw a definitive conclusion.

arXiv comment11 pages, 7 figures, and 7 tables. Minor revisions in response to the referee's comments; accepted by MNRAS

References in corpus (48)

• Nuclear Ground-State Masses and Deformations
• How Massive Single Stars End their Life
• Nucleosynthesis in Massive Stars With Improved Nuclear and Stellar Physics
• Astrophysical Reaction Rates From Statistical Model Calculations
• Galactic chemical evolution: Carbon through Zinc
• Radioactive 26Al and massive stars in the Galaxy
• Core-collapse supernova equations of state based on neutron star observations
• Progenitor-Explosion Connection and Remnant Birth Masses for Neutrino-Driven Supernovae of Iron-Core Progenitors
• Physics of Core-Collapse Supernovae in Three Dimensions: a Sneak Preview
• Perspectives on Core-Collapse Supernova Theory
• Asymmetries in core-collapse supernovae from maps of radioactive ${}^{44}$Ti in CassiopeiaA
• Nucleosynthesis in Early Supernova Winds II: The Role of Neutrinos
• The Effects of Thermonuclear Reaction Rate Variations on Nova Nucleosynthesis: A Sensitivity Study
• Composition of the Innermost Core Collapse Supernova Ejecta
• The rp-Process in Neutrino-driven Winds
• Production and Distribution of ${}^{44}$Ti and ${}^{56}$Ni in a Three-dimensional Supernova Model Resembling Cassiopeia A
• Explosive Nucleosynthesis in Axisymmetrically Deformed Type II Supernovae
• Trends in Ti44 and Ni56 from Core-Collapse Supernovae
• PUSHing Core-Collapse Supernovae to Explosions in Spherical Symmetry III: Nucleosynthesis Yields
• Pushing 1D CCSNe to explosions: model and SN 1987A
• Sensitivity of astrophysical reaction rates to nuclear uncertainties
• PUSHing Core-Collapse Supernovae to Explosions in Spherical Symmetry II: Explodability and Global Properties
• Nuclear Reactions Rates Governing the Nucleosynthesis of Ti44
• The Reaction Rate Sensitivity of Nucleosynthesis in Type II Supernovae
• Uncertainties in the production of $p$ nuclei in massive stars obtained from Monte Carlo variations
• On the Sensitivity of Massive Star Nucleosynthesis and Evolution to Solar Abundances and to Uncertainties in Helium Burning Reaction Rates
• PUSHing core-collapse supernovae to explosions in spherical symmetry IV: Explodability, remnant properties and nucleosynthesis yields of low metallicity stars
• Revisiting INTEGRAL/SPI observations of 44Ti from Cassiopeia A
• Uncertainties in s-process nucleosynthesis in massive stars determined by Monte Carlo variations
• Uncertainties in the production of p nuclides in thermonuclear supernovae determined by Monte Carlo variations
• Opportunities to constrain astrophysical reaction rates for the s-process through determination of the ground state cross sections
• Uncertainties in s-process nucleosynthesis in low mass stars determined from Monte Carlo variations
• Impact of supernova dynamics on the νp-process
• The Impact of Nuclear Reaction Rate Uncertainties On The Evolution of Core-Collapse Supernova Progenitors
• Uncertainties in $\nu$p-process nucleosynthesis from Monte Carlo variation of reaction rates
• The Nucleosynthetic Yields of Core-Collapse Supernovae, prospects for the Next Generation of Gamma-Ray Astronomy
• Erratum: Progenitor-explosion connection and remnant birth masses for neutrino-driven supernovae of iron-core progenitors (2012, ApJ, 757, 69)
• The impact of (n,$\gamma$) reaction rate uncertainties of unstable isotopes on the i-process nucleosynthesis of the elements from Ba to W
• Revisiting Impacts of Nuclear Burning for Reviving Weak Shocks in Neutrino-Driven Supernovae
• Reaction Rate Sensitivity of the Production of $\gamma$-ray Emitting Isotopes in Core-Collapse Supernova
• Sensitivity of ${}^{44}$Ti and ${}^{56}$Ni production in CCSN shock-driven nucleosynthesis to reaction rates
• Parameterisations of thermal bomb explosions for core-collapse supernovae and 56Ni production
• The fate of rotating massive stars across cosmic times
• Updating the ${}^{56}$Ni Problem in Core-collapse Supernova Explosion
• Evaluation of Experimental Constraints on the ${}^{44}$Ti($\alpha$,p)${}^{47}$V Reaction Cross Section Relevant for Supernovae
• Monte Carlo variations as a tool to assess nuclear physics uncertainties in nucleosynthesis studies
• Comparison of Three Methods for Triggering Core-collapse Supernova Explosions in Spherical Symmetry
• Impact of Uncertainties in Nuclear Reaction Cross Sections on p-Nucleosynthesis in Thermonuclear Supernovae