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名稱Title
2021天文年會
國立嘉義大學蘭潭校區
5月21日至23日

論文摘要

Impact of nuclear heating on the mixing of kilonova ejecta

[ Poster ]

Li-Ting Ma (Institute of Astronomy, National Tsing Hua University); Herlik Wibowo (Institute of Physics, Academia Sinica); Kuo-Chuan Pan (Department of Physics and Institute of Astronomy, National Tsing Hua University); Meng-Ru Wu (Institute of Physics, Academia Sinica)

The multimessenger detections of the kilonova GW170817 from a merger of two neutron stars reveal several interesting questions in understanding the properties of radioactively powered ejecta. In this project, we parametrize the outflow properties around the merger remnants and investigate the feedback from nuclear heating on the outflow of kilonova ejecta and the follow-up nucleosynthesis via long-term axisymmetric hydrodynamics simulations. We find that r-process heating feedback could significantly enhance the ejecta speed and enlarge the ejecta temperature and entropy, comparing to the values obtained without heating.