自洽的轻子-强子耀变体辐射模型

A self-consistent lepto-hadronic blazar emission model

提出了一个单区的均匀的轻子-强子混合模型研究耀变体的辐射,模型中考虑了轻子-强子相互作用产生的次级粒子.在模型中,假设质子和电子稳定地注入到辐射区,并用一组非线性方程描述质子、电子和光子随时间的演化.这组方程自洽地包含了质子-光子相互作用,质子和正负电子对的同步辐射,逆康普顿散射以及同步自吸收,并将模型用于产生PKS 2155-304的多波段辐射能谱.结果表明,对于PKS 2155-304,光学到X-射线波段的辐射来自于原初和次级电子的同步辐射,而Gamma射线来自于质子的同步辐射和次级电子的同步辐射.特别地,PKS 2155-304位于6E^2′10 Me V能段的驼峰来自于Bethe-Heitler对产生过程产生电子的同步辐射.

Introduce a one-zone homogeneous time-dependent lepto-hadronic model for blazar emission that takes into account the radiation emitted by secondary particles from photo-hadronic interactions.In the model,a steady electron and proton injection rate in the source is assumed,and then the non-linear time-dependent kinematic equations describing evolutions of electrons,protons and photons are required,which selfconsistently involve proton-photon interaction,synchrotron radiation of electron/positron pairs and proton,inverse Compton scattering,and synchrotron self-absorption.The model is applied to reproduce the multi-wavelength spectrum of PKS 2155-304.The results indicate that(1)optical and X-ray bands of PKS 2155-304 are contributed by synchrotron radiation of primary and secondaries electron.(2)Gamma-rays are from synchrotron radiation of proton and secondaries electron,particularly,the TeV bump of PKS 2155-304 at the energy range of E^2×106 MeV are contributed by the synchrotron radiation of secondaries electron which produced by Bethe-Heitler pair production.