Multi-Epoch and Multi-Color Modeling of Gamma-Ray Burst Sources

这个项目将模拟伽玛射线暴(GRB)源在不同历元和不同能带的发射。它大力发展分析、半分析和数值框架。这项工作有三个主要目的：1)通过计算抖动发射范式中的特征破裂频率、通量幂定律指数和测辐射热通量演化，建立一个全面的伽玛暴余辉模型；2)了解非碰撞伽玛暴冲击中电子的非费米加速；以及3)建立一个涵盖瞬发和X射线耀斑阶段的伽玛暴瞬时发射的半解析和数值框架。对时间、光谱和偏振演化的精确建模将探索这些模型是否与观测到的关联一致。这一结果将有助于提高对观测结果的物理理解和解释，并最终揭开伽玛暴起源之谜。研究生培训、教育和研究是这项研究的主要组成部分，将为三名学生提供三个相互关联的子项目的支持。在研究期间，该团队将在他们的部门开发一个显示器，以及适当的网络资源，使用日常物理以非传统的方式描述伽玛射线暴现象。其他影响将来自理论工具的发展，这些工具将影响等离子体天体物理学的许多领域。

AST-0708213MedvedevThis project will model the emission from Gamma-Ray Burst (GRB) sources at various epochs and in different energy bands. It makes a strong effort to develop analytical, semi-analytical and numerical frameworks. The work has three main thrusts: 1) to develop a comprehensive model of GRB afterglows by calculating characteristic break frequencies, flux power-law indices and the bolometric flux evolution in the jitter emission paradigm; 2) to understand the non-Fermi acceleration of electrons in collisionless GRB shocks; and 3) to develop a semi-analytical and numerical framework for studies of GRB transient emission, covering the prompt and X-ray flare phases. Accurate modeling of temporal, spectral and polarization evolution will explore whether the models are consistent with the observed correlations. The results will be valuable for improved physical understanding and interpretation of observational results, and ultimately for uncovering the mystery of the origin of GRBs.Graduate student training, education and research is the dominant component of this study, which will support three students for three inter-related sub-projects. During the study, the team will develop a display at their department, along with appropriate web resources, to describe the GRB phenomenon in a non-traditional way using every-day physics. Additional impacts will come from the development of theoretical tools that will influence many areas of plasma astrophysics.