Blazar伽马射线辐射的起源研究

Blazar是伽马射线辐射的重要天体之一，也是研究活动星系核的吸积、喷流、粒子加速等物理过程的重要天体。然而，blazar伽马射线辐射的起源仍然存在许多问题，观测到TeV辐射的快速光变、非常硬的TeV辐射谱、FSRQ的甚高能伽马射线辐射、FSRQ的GeV辐射谱分段等，挑战传统的轻子和强子辐射模型。项目将综合分析伽马射线辐射区的物理过程，发展轻子-重子辐射模型，考虑辐射区的结构和多辐射成分耦合，研究辐射区中物理参量的关联和合理性，探讨辐射区的轻子、强子、粒子加速、软光子场等相互作用，揭示blazar伽马射线辐射起源的物理本质。

Blazars are one of most important objects emitting gamma-ray radiation. They are used to study the processes of accretion, jet and particle acceleration in AGNs. However, the origins of gamma-ray emission in blazars have many questions. The observed gamma-ray properties, including fast variability and very hard spectrum in TeV energy band, very high energy gamma-ray emission and GeV spectral break in FSRQs, challenge the traditionally leptonic and hadronic model. The project will analyze the physical processes in gamma-ray emitting region comprehensively and investigate the relation and rationality of physical parameters. The interaction of lepton, hadrons, particle acceleration and soft photon field will be explored to find the gamma-ray production mechanism in blazars.