论文标题
中微子驱动的,富含中微子的超新星弹射体中的核物理不确定性
Nuclear physics uncertainties in neutrino-driven, neutron-rich supernova ejecta
论文作者
论文摘要
核心塌陷超新星(CCSNE)中中微子驱动的喷射提供了一个有趣的天体物理场景,可以合成SR和AG之间的较轻的沉重元素。先前的研究强调了($α,n $)反应在这些元素的产生中起着重要作用,尤其是在富含中子和α的环境中。在本文中,我们研究了元素丰度对不同天体物理条件下特定($α,n $)反应速率不确定性的敏感性。经过一项蒙特卡洛核合成研究,对36多个代表性的天体风化条件进行了研究,我们根据对最终元素丰度的影响确定了最重要的反应。这些反应的实验研究将减少核合成的不确定性,并可以使用观测值了解较轻的重元素的起源以及它们形成的天体物理条件。
Neutrino-driven ejecta in core collapse supernovae (CCSNe) offer an interesting astrophysical scenario where lighter heavy elements between Sr and Ag can be synthesized. Previous studies emphasized the important role that ($α,n$) reactions play in the production of these elements, particularly in neutron-rich and alpha-rich environments. In this paper, we have investigated the sensitivity of elemental abundances to specific ($α,n$) reaction-rate uncertainties under different astrophysical conditions. Following a Monte Carlo nucleosynthesis study with over 36 representative astrophysical wind conditions, we have identified the most important reactions based on their impact on the final elemental abundances. Experimental studies of these reactions will reduce the nucleosynthesis uncertainties and make it possible to use observations to understand the origin of lighter heavy elements and the astrophysical conditions where they are formed.