English

Hydrodynamics and Nucleosynthesis of Jet-Driven Supernovae I: Parameter Study of the Dependence on Jet Energetics

High Energy Astrophysical Phenomena 2023-05-10 v2

Abstract

Rotating massive stars with initial progenitor masses MprogM_{\rm prog} \sim 25 MM_{\odot} -- \sim140 MM_{\odot} can leave rapidly rotating black holes to become collapsars. The black holes and the surrounding accretion disks may develop powerful jets by magneto-hydrodynamics instabilities. The propagation of the jet in the stellar envelope provides the necessary shock heating for triggering nucleosynthesis unseen in canonical core-collapse supernovae. Yet, the energy budget of the jet and its effects on the final chemical abundance pattern are unclear. In this exploratory work, we present a survey on the parameter dependence of collapsar nucleosynthesis on jet energetics. We use the zero-metallicity star with MprogM_{\rm prog} \sim 40 MM_{\odot} as the progenitor. The parameters include the jet duration, its energy deposition rate, deposited energy, and the opening angle. We examine the correlations of following observables: (1) the ejecta and remnant masses, (2) the energy deposition efficiency, (3) the 56^{56}Ni production and its correlation with the ejecta velocity, deposited energy, and the ejected mass, (4) the Sc-Ti-V correlation as observed in metal-poor stars, and (5) the [Zn/Fe] ratio as observed in some metal-poor stars. We also provide the chemical abundance table of these explosion models for the use of the galactic chemical evolution and stellar archaeology.

Keywords

Cite

@article{arxiv.2304.14935,
  title  = {Hydrodynamics and Nucleosynthesis of Jet-Driven Supernovae I: Parameter Study of the Dependence on Jet Energetics},
  author = {Shing-Chi Leung and Ken'ichi Nomoto and Tomoharu Suzuki},
  journal= {arXiv preprint arXiv:2304.14935},
  year   = {2023}
}

Comments

21 pages, 32 figures. Accepted for publication in Astrophysical Journal, submitted at Jul 13 2022, revised at Jan 17 2023, accepted at Feb 20 2023, published at May 9 2023