论文标题
cassiopeia中的钛和铁超新星残留物
Titanium and Iron in the Cassiopeia A Supernova Remnant
论文作者
论文摘要
据信，在原始恒星上方的混合在超新星发动机中起着重要作用，这种混合导致超新星爆炸与不对称性。在最内向的弹射器中产生的元素，例如$ {}^{56} $ ni和$ {}^{44} $ ti，提供了对此引擎的干净探针。 $ {}^{44} $ ti的生产对确切的生产途径特别敏感，并且通过了解可用的路径，我们可以使用$ {}^{44} $ ti来探测超新星引擎。使用来自三维超新星爆炸模型的热力学轨迹，我们回顾了这些元素的产生以及预期在超新星背后的“对流引擎”范式下形成的结构。我们将结果与最近的X射线和$γ$ -Ray的观测值进行比较。
Mixing above the proto-neutron star is believed to play an important role in the supernova engine, and this mixing results in a supernova explosion with asymmetries. Elements produced in the innermost ejecta, e.g., ${}^{56}$Ni and ${}^{44}$Ti, provide a clean probe of this engine. The production of ${}^{44}$Ti is particularly sensitive to the exact production pathway and, by understanding the available pathways, we can use ${}^{44}$Ti to probe the supernova engine. Using thermodynamic trajectories from a three-dimensional supernova explosion model, we review the production of these elements and the structures expected to form under the "convective-engine" paradigm behind supernovae. We compare our results to recent X-ray and $γ$-ray observations of the Cassiopeia A supernova remnant.
