Nuclear Physics Seminar - Wei Jia Ong (Lawrence Livermore National Lab) - Galactic Forensics - Utilizing Stellar Debris to Investigate Explosive Nucleosynthesis

Andrey Tarasov (The Ohio State University) 11/20/19 Nuclear Physics seminar speaker
January 22, 2020
3:30PM - 4:30PM
4138 Physics Research Building @ 3:30pm

Date Range
2020-01-22 15:30:00 2020-01-22 16:30:00 Nuclear Physics Seminar - Wei Jia Ong (Lawrence Livermore National Lab) - Galactic Forensics - Utilizing Stellar Debris to Investigate Explosive Nucleosynthesis Core-collapse supernovae (CCSNe) nucleosynthesis contributes significantly to the production of the chemical elements in the galaxy but the rarity of high-quality spectroscopic observations (through no fault of astronomers) hinders our understanding of these processes. What nuclei are expelled into the interstellar medium by CCSNe, and how are these nuclei made? I will discuss the concerted, multi-disciplinary approach being pursued by the nuclear astrophysics team at LLNL to probe explosive nucleosynthesis. We combine radioactive beam measurements of important reaction rates with state-of-the-art nucleosynthesis network models to make predictions for isotopic abundances that we then compare to data from in-house nano-analytical measurements of presolar CCSNe grains obtained from meteorites. I will present our first results and on-going work.  4138 Physics Research Building @ 3:30pm America/New_York public

Core-collapse supernovae (CCSNe) nucleosynthesis contributes significantly to the production of the chemical elements in the galaxy but the rarity of high-quality spectroscopic observations (through no fault of astronomers) hinders our understanding of these processes. What nuclei are expelled into the interstellar medium by CCSNe, and how are these nuclei made? I will discuss the concerted, multi-disciplinary approach being pursued by the nuclear astrophysics team at LLNL to probe explosive nucleosynthesis. We combine radioactive beam measurements of important reaction rates with state-of-the-art nucleosynthesis network models to make predictions for isotopic abundances that we then compare to data from in-house nano-analytical measurements of presolar CCSNe grains obtained from meteorites. I will present our first results and on-going work.