Possible properties of Te V spectra in PKS 2155–304  

作　　者：Quan-Gui Gao Fang-Wu Lu Long-Hua Qin Huai-Zhen Li Ju Ma Ji-Yang Ren Hai-Ru Zhao Ting-Feng Yi 

机构地区：[1]Physics Department,Yuxi Normal University,Yuxi 653100,China [2]Key Laboratory of Astroparticle Physics of Yunnan Province,Kunming 650091,China [3]Department of Physics,Yunnan Normal University,Kunming 650092,China

出　　处：《Research in Astronomy and Astrophysics》2021年第3期227-234,共8页天文和天体物理学研究（英文版）

基　　金：partially supported by the National Natural Science Foundation of China(Grant Nos.12063006,11803027and 11863007);Yunnan Local Colleges Applied Basic Research Projects(Grant Nos.202001BA070001-031,2017FH001-102,2018FH001-015,2019FH001-012 and2019FH001-076);Science Research Foundation of Yunnan Education Department of China(Grant Nos.2017ZZX177,2018JS422 and 2019J0733);the financial support from the Hundred Talents Program of Yuxi(Grant Nos.2019)。

摘　　要：We present a one-zone homogeneous lepton-hadronic model and obtain steady-state spectra by solving the time-dependent equations to study a plausible origin of hard TeV spectra in PKS 2155-304.In this model,we assume a steady electron and proton injection rate in the source and solve the non-linear time-dependent kinematic equations that self-consistently consist of proton-photon interaction,synchrotron radiation of electron/positron pairs and proton,inverse Compton scattering,and synchrotron self-absorption.We employ this model to reproduce the multi-wavelength spectrum of PKS 2155-304,then find that the possible bump located at E~1 TeV which may originate from the synchrotron radiation of secondary electrons produced by Bethe-Heitler pair production,resulting in the hard TeV spectrum.

关 键 词：radiation mechanisms:non-thermal BL Lacertae objects:individual(PKS 2155–304) gamma rays:galaxies 

分 类 号：P15[天文地球—天文学]