报告题目：Cooling and Infrared Emission due to Molecular Collisional Excitation in Astrophysical Environments
报 告 人：Prof. Phillip Stancil (University of Georgia, USA)
报告时间：2012年7月16日 下午15:00
报告地点：物理学院六层学术报告厅（长安校区致知楼3623-3624）
报告摘要：Non-thermal popluations of molecules in a variety of astronomical environments, including photodissociation regions, X-ray dominated regions, and protoplanetary disks, are controlled by collisional excitation and quenching of their rovibrational levels. The important colliders are the dominant neutral species: H, He, and H_2. Resulting emission lines are primary cooling transitions and can be observed by current and upcoming IR/submillimeter observatories including Spitzer, Herschel, SOFIA, and ALMA. Modeling these environments, however, requires large-scale computation of collisional excitation processes. The status, needs, and astrophysical applications for important molecular targets will be reviewed including H_2, HD, CO, H_2O, and NH_3.
报告人简介：Prof. Phillip Stancil works at the Department of Physics and Astronomy, Center for Simulational Physics University of Georgia, USA. His research interests are Computational/theoretical atomic and molecular physics: early Universe, PDRs, solar system x-rays, EGPs, cold collisions, and quantum simulation. Prof. Phillip Stancil received his B.S. degree in Mech. Engineering, from Old Dominion University in 1986, and M.S. degree in Physics from ODU in 1990.He completed his Ph.D. degree in Physics from ODU, Norfolk, in 1994. The dissertation is Strong Magnetic Field Effects and Molecular Processes with Applications to White Dwarfs. He completed as Predoctoral Fellow in Smithsonian Astrophysical Observatory, and his advisors are Prof. Alex Dalgarno and Prof. Gary Copeland.
Email: stancil@physast.uga.edu
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物理学与信息技术学院
2012年7月14日
