Possible properties of TeV 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
• 来源期刊: 天文和天体物理学研究
• 年，卷（期）: 2021,（3）
• 页码范围: 227-234
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-4527/21/3/73

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.