| Autor: |
Tianshu Wang, Adam Burrows |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
The Astrophysical Journal, Vol 974, Iss 1, p 39 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1538-4357 |
| DOI: |
10.3847/1538-4357/ad6983 |
| Popis: |
We report nucleosynthetic results for both ^44 Ti and nickel isotopes for 18 three-dimensional (3D) core-collapse supernova (CCSN) simulations extended to ∼20 s after bounce. We find that many of our long-term models are able to achieve ^44 Ti/ ^56 Ni ratios similar to that observed in Cassiopeia A, and modern supernova models can synthesize up to 2 × 10 ^−4 M _⊙ of ^44 Ti. Neutrino-driven winds and the fact that there can be simultaneous accretion and explosion in 3D models of CCSNe play central roles in its production. We conclude that the ^44 Ti underproduction problem in previous CCSN models is no longer an issue. In addition, we discuss the production of both ^57 Ni and stable nickel/iron ratios and compare our results to observations of SN 1987A and the Crab. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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