耀变体爆发的观测和理论研究

耀变体是喷流方向基本正对观测者的一类特殊射电噪活动星系核，它具有大幅度的全电磁波段光变，它的光变是研究活动星系核中心结构、能量辐射机制、相对论喷流中激波产生和传播、粒子加速和冷却、湍流等物理过程的重要手段。光变主要以爆发的形式表现出来，因此耀变体多波段爆发的研究具有重要科学意义。项目提出通过观测和处理公开的多波段观测数据，得到选定耀变体样本的多波段光变曲线，研究爆发分离和测量方法，获取爆发的持续时标、上升下降时标、爆发幅度、爆发能量等观测量，对这些观测量进行研究以理解爆发的物理过程。研究多波段爆发相关关系，结合物理模型研究爆发的物理起源、甄别辐射机制。研究激波随机加速喷流中湍流元胞的物理模型以研究和拟合微光变，应用数值模拟方法研究喷流及其结构、喷流中的湍流对耀变体爆发的作用，将观测量及物理模型密切结合，深入研究分析多波段爆发的物理起因、物理过程，以期逐步解决耀变体光变爆发的物理本质。

Blazar is one special class of radio load Active Galactic Nuclei(AGN) which has relativistic jet almost aligned to our line of sight. It has high amplitude variability in all wavelengths. Variability of blazar is a crucial method to research the central structure, energy radiation mechanism of AGN, to understand the production and propagation of shock, turbulence in relativistic jet, the acceleration and cooling mechanism of electrons and so on. Flaring is shown during variability, so the research of multi-band flaring of blazar is scientifically important. We will build multi-band light curves of selected blazar sample by process the observations and public available multi-band data. The duration time, increase time, decline time, amplitude and energy of flares can be obtained by investigating flare decoupling and fitting methods. We will analyze and research these observational quantities to understand the physical process of flaring in this project. The correlations among the multi-band flares will be analyzed, and the radiation mechanisms and origin of flare will be diagnosed and understood connected with physical models. Microvariability will be researched and fitted by the physical model of stochastic turbulent cells accelerated by the shock in the jet. Simulation will be used to understand the effect of the structure, turbulence of the jet to the blazar flaring. The physical origin, physical process of multi-band flaring of blazar will be investigated deeply by close connection between the observational quantities and physical models. We hope the nature of blazar flaring can be understood well step by step.