应稀有同位素前沿科学中心邀请，中国科学院高能物理研究所王夕露研究员将于2024年5月22日来校进行学术交流并作报告。

       报告题目：Using astrophysical observables to probe heavy-element nucleosynthesis in supernovae and neutron star mergers

       报告时间：2024年5月22日（星期三）15 : 30

       报告地点：兰州大学二分部现物 楼214室

       欢迎广大师生参加！

【报告摘要】

       The exact nucleosynthesis processes and sites for heavy-element productions in our universe remain a mystery for decades. Heavy-element nucleosynthesis is normally expected to be associated with extreme astrophysical conditions involving compact objects, such as core-collapse supernovae or binary neutron star mergers (NSM) that are also multi-messenger events.

Here I will discuss works on probing the heavy-element nucleosynthesis in supernovae and neutron star mergers using the astrophysical observables of prompt electromagnetic emissions, long-lived abundance yields as well as live isotopes. First, we describe a possible NSM electromagnetic signal due to the MeV gamma rays produced from the decays of the r-process species. Such a signal holds the promise to be a distinct signature of the production of heavy fissioning species. I will also summarize works on heavy-element nucleosynthesis abundance yields, where the spallation effects on the NSM r-process abundance shapes have been investigated, and the possible impacts of neutrino interactions on the heavy-element nucleosynthesis yields in supernovae are explored both for the proton-rich side and neutron-rich side. Lastly, I will show our work on the calculation of the abundances of the live r-process radioisotopes produced from near-earth supernovae and neutron star mergers and the impact of the measurements of interesting isotopes, like Fe60, Pu244, etc., in constraining the possible near-earth r-process event.

【报告人简介】

       Xilu Wang is the associate professor at the Institute of High Energy Physics, Chinese Academy of Sciences. Her current research mainly focuse on nuclear astrophysics and gamma-ray astronomy.She got B.S. degree in physics from Wuhan University, China in 2011, and completed her PhD in astronomy in 2018 at University of Illinois at Urbana-Champaign. Then she worked as the N3AS (Network for Neutrinos, Nuclear Astrophysics, and Symmetries) Postdoctoral Fellow at the University of California, Berkeley and the University of Notre Dame. She joined the Institute of High Energy Physics in 2021 and was selected into the national young talents project in 2022.

       王夕露现任中国科学院高能物理研究所青年特聘研究员，研究工作主要聚焦在核天体物理和伽马射线天文方向。她本科毕业于武汉大学物理科学与技术学院，并于2018年在美国伊利诺伊大学香槟分校获得天文博士学位，之后加入美国多信使合作组织和国家科学基金物理前沿中心N3AS作为N3AS Fellow在美国加州大学伯克利分晓和圣母大学从事核天体物理相关的博士后工作。王夕露于2021年12月加入中国科学院高能物理研究所粒子天体物理中心，2022年入选国家引才青年项目。

稀有同位素前沿科学中心

2024年5月18日