Date: Feb. 15 (Thu.), 2018

Place: Lecture room 1, Main bldg. 6F, RCNP, Osaka University

Speaker: Prof. Toshitaka Kajino (NAOJ/U. Tokyo/BUAA)



Title:
　Impact of Neutron Star Mergers vs. Supernovae on Explosive Nucleosynthesis and Neutrino Physics

Abstract:
　Terrestrial heavy elements such as uranium are considered to be produced via rapid neutron-capture (r-) process. There have been controversy between the supernova explosion scenario and the neutron-star merger scenario as the mechanism of r-process. Recently, an event of the neutron-star merger was identified with telescopes of gravitational waves, cosmic gamma-rays, and optical and infrared lights, strongly suggesting the neutron-star merger scenario. This is actually the beginning of the nuclear astrophysics based on the multi-messenger astronomy. In this seminar, recent studies on the origin of heavy elements via the theoretical calculations of r-process nucleosynthesis as well as chemical and dynamical evolutions of our galaxy will be presented. The importance of the neutrino oscillation in supernova nucleosynthesis is also discussed.