M87的多波段辐射过程及其能谱拟合

The multiband emission of M87 and its energy spectrum fitting

观测表明,M87是第一颗观测到具有伽马射线辐射的河外射电星系,它的能谱分布具有明显的双峰结构,并且喷流具有大尺度的张角.大尺度的喷流结构使M87的喷流方向和视线方向具有一定的偏差,因而分析M87的能谱结构需要对标准的同步自康普顿模型进行一定的修正.通过理论分析,建立多个辐射区域的自康普顿辐射模型,并利用该模型对其多波段能谱进行拟合,解释其能谱特性及物理过程.

Observations show that M87 is the first extragalactic source detected in the Te V range and its spectral energy distribution has obvious double-peak structure.The large scale jet of M87 is misaligned with the line of sight, which leads to a modificationof standard emission modelsappears necessary to account for the multiband emission of M87.It is developed a new multi-blob synchrotron self-Compton model to explain the multiband emission of this misalignment and apply it to fitting the multiband emission of M87,and also explain the spectrum characteristics and physical process.