报告题目：Central Engine of Long GRBs, Propagation of Relativistic Jets, and Emission Mechanism of GRBs.

报 告 人：Shigehiro Nagataki （From:  Yukawa Institute for Theoretical Physics, Kyoto University, Oiwake-cho Kitashirakawa Sakyo-ku, Kyoto 606-8502, Japan）

摘　  要：I would like to present our current status on "Numerical Simulations of Collapsars". I would like to show the simulations of the central  engine of Long Gamma-Ray Bursts by the General Relativistic MHD code  (Nagataki ApJ 2009). Especially, I would like to show that a strong jet is launched from a rapidly rotating black hole. I would like to show how the jet is collimated, which determines the opening angle of the jet (Nagataki PASJ 2010). Also, I would like to show the simulations of propagation of a relativistic GRB jet and thermal emission from its photosphere, which may be related GRB090902B that showed a clear two-component spectrum (Mizuta, Nagataki, Aoi ApJ 2011).

时　  间：2011年8月9日（周二）上午10:00

地　  点：天文系小院202教室

欢迎您/你的参加！

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