学术报告:Origin of the Elements, Neutron star, and Kilonova

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报告题目:Origin of the Elements, Neutron star, and Kilonova
报 告 人:Dao Tien Khoa(Institute for Nuclear Science and Technology, VINATOM)
报告时间:2018年6月15日(星期五)上午10:30-12:00
报告地点:嘉定园区学术活动中心302房间
报告简介:
This lecture is aimed to give a popular, non-expert understanding of the formation of elements during the evolution of Universe, which began shortly after the Big Bang 13.9 billion years ago. The lecture is focused on the central role of the nucleosynthesis pro- cesses like the fusion or neutron induced reactions in the formation of all stable and radioactive elements that make up the visible matter surrounding us. The lecture also illustrates the birth of a neutron star, formed instantly after the death of a massive star as the gravitational collapse giving rise to a supernova explosion. Then the discussion is focused on the first ever observation of the merger of two neutron stars (Kilonova) by the detection of both gravitational waves and gamma rays on August 17, 2017 by the LIGO-Virgo Gravitational-wave detectors, Fermi Gamma-ray Space Telescope, and International Gamma-ray Astrophysics Laboratory, and the later detection of the X-ray, infrared radiations as well as the visible light by more than 70 telescopes in the world. The gamma spectra seen in this event confirms unambiguously that the neutron-star merger is the site of the formation of the heavy elements like gold and platinum, and solves, there- fore, the long debated puzzle on the origin of the heavy elements. The lecture should be interesting and inspiring to anyone with some general knowledge in physics.
报告人简介:

Title: PhD in Nuclear Physics awarded by the Joint Institute for Nuclear Research in Dubna, Russia, in 1985. Full Professor.
Research activities:
?    Direct nuclear reactions: Elastic and inelastic proton, alpha and heavy-ion scattering, coupled reaction channel calculations, quasi-elastic scattering reactions induced by the radioactive beams...
?    Nuclear structure: Excitation of nuclear cluster states, low-lying vibrations and giant resonances in nuclei...
?     Nuclear astrophysics: Equation of state of asymmetric nuclear matter, proto-neutron and neutron stars, fusion of light nuclei and nucleon induced reactions...
Teaching activities: Adjunct professor at the Department of Physics, University of Natural Sciences and University of Pedagogy in Ho Chi Minh City, currently supervising 5 PhD students.
Publications: Authored more than 100 scientific publications, with most of them published in the international physics journals qualified for the impact-factor rating by the ISI Web of Knowledge. Personal citation h-index=30.
Other activities:
?    Regular referee for the major nuclear physics journals like Physical Review Letters, Physical Review C, Nuclear Physics A, European Journal of Physics A, Physics Letters B, Journal of Physics G...
?    Official partner in several international research collaborations in nuclear physics between Vietnam and other countries.
?    Participation at different international nuclear physics conferences as the member of the advisory committee and/or invited speaker. Chair of the international conference series: International Symposium on Physics of Unstable Nuclei (ISPUN), held regularly in Vietnam since 2002.

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