本项目研究重子火球、磁主导喷流涉及瞬时辐射的喷流动力学过程，主要包括喷流涨落、内激波动力学、磁主导喷流动力学，并结合观测数据，探究瞬时辐射物理。(1) 获得伽玛暴喷流自身的涨落行为并探究其起源，解释X射线鼓包上的涨落行为。(2) 在“光球层+内激波”辐射主导的伽玛暴中，分离光球层、内激波辐射成分，探究光球层辐射物理及内激波动力学过程。(3) 研究磁主导喷流的动力学演化，给出磁主导喷流的独特观测特征及Band谱的形成机理。 (4) 研究伽玛暴X射线耀发、X射线鼓包、内部平台的喷流辐射效率、洛伦兹因子、辐射区位置等信息，并探究这些喷流与产生瞬时辐射的喷流的异同点，以了解伽玛暴喷流的耗散机制。

In this project, we study the dynamic processes of jet associated with the prompt emission of gamma-ray bursts (GRBs). The jet's fluctuations, internal shock model, and the evolution of Poynting flux dominated jet are explored. Combined with observational data, we explore the radiation physics of GRBs' jet. (1) We try to obtain the fluctuations of jet and investigate the origin of these fluctuations. In addition, the fluctuations presented in the X-ray bumps of GRBs are also explored. (2) In the "photonsphere + internal shock" model, the radiation from the photonsphere and that from the internal shocks are detached in order to study the dynamics of photonsphere and internal shocks. (3) The evolution of Poynting flux dominated jet is estimated and the observational characteristics of Poynting flux dominated jet are our focus. The formations of Band function spectrum are also studied. (4) The radiation efficiency, Lorentz factor, and the dissipation location of jets producing the X-ray flare, the X-ray bump, and the internal plateau are studied. The similarities of these jets and the jet producing prompt emission are also explored.