Establishing a particle distribution for multi-wavelength emission from BL Lac objects
Establishing a particle distribution for multi-wavelength emission from BL Lac objects
复制标题
建立 BL Lac 物体多波长发射的粒子分布
DOI：
10.1007/s10509-020-03864-9
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Zheng Y. G.
中科院分区：
文献类型：
--
作者：
Xie X. X.;Zhu K. R.;Kang S. J.;Zheng Y. G.
电子在激波处被加速扩散并向外平流，随后漂移到位于平面激波下游流中的射流的发射区中。目前的工作考虑了冲击波阵面中电子的加速。假设在激波和下游区域之间的界面处有一个适当的边界条件，在这项工作中提出了一种新的下游流中的粒子分布，以再现BL Lac天体的宽带谱能量分布。我们发现：（1）我们可以在四种情况下获得激波下游的粒子分布;（2）具有较高能量的电子（）主导发射光谱;（3）我们模型中假设的明显重要的物理参数可以合理地再现高同步辐射峰值BL Lac天体Markarian 421（Mrk 421）的多波长光谱。
Electrons are accelerated at the shock wave diffuse and advect outward, and subsequently drift away into the emitting region of the jet that is located in the downstream flow from the plane shock. The current work considers the acceleration of the electrons in the shock front. Assuming a proper boundary condition at the interface between the shock and the downstream zones, a novel particle distribution in the downstream flow is proposed in this work to reproduce the broadband spectral energy distribution of BL Lac objects. We find that (1) we can obtain the particle distribution downstream of the shock wave in four cases; (2) electrons with higher energy () dominate the emission spectrum; (3) the distinctly important physical parameters assumed in our model can reasonably reproduce the multi-wavelength spectrum of the high-synchrotron-peaked BL Lac object Markarian 421 (Mrk 421).