论文标题
亚偏见的AGN喷气机的两个温度磁流体动力学模拟：依赖电子加热的分数
Two-temperature Magnetohydrodynamic simulations for sub-relativistic AGN jets:Dependence on the fraction of the electron heating
论文作者
论文摘要
我们介绍了活性银河核的亚浮雕射流传播的两个温度磁流体动力学模拟的结果。对电击前端的电子加热Fe分数的电子和离子温度分布的依赖性研究为Fe = 0、0.05和0.2。数值结果表明，在亚偏见，稀疏的喷气机中，穿过末端冲击的射流等离子体形成了一个热的，两倍的血浆，其中离子温度高于电子温度。两个温度的等离子体扩展并形成称为茧的回流，其中离子温度保持高于电子温度超过100 myr的电子温度。茧中的电子通过库仑碰撞连续加热，因此电子温度保持在茧中的Te> 10^9 k。来自茧的X射线排放较弱，因为电子数密度较低。同时，从茧周围的冲击内介质发出了软X射线。在界面上通过开尔文（Kelvin） - 螺旋 - 螺旋内部不稳定性将射流等离子体和冲击的内部介质混合，从而增强了茧和震惊的内部介质之间的接触不连续性周围的X射线排放。
We present the results of two-temperature magnetohydrodynamic simulations of the propagation of sub-relativistic jets of active galactic nuclei. The dependence of the electron and ion temperature distributions on the fraction of electron heating fe at the shock front is studied for fe=0, 0.05, and 0.2. Numerical results indicate that in sub-relativistic, rarefied jets, the jet plasma crossing the terminal shock forms a hot, two-temperature plasma in which the ion temperature is higher than the electron temperature. The two-temperature plasma expands and forms a backflow referred to as a cocoon, in which the ion temperature remains higher than the electron temperature for longer than 100 Myr. Electrons in the cocoon are continuously heated by ions through Coulomb collisions, and the electron temperature thus remains at Te > 10^9 K in the cocoon. X-ray emissions from the cocoon are weak because the electron number density is low. Meanwhile, soft X-rays are emitted from the shocked intracluster medium surrounding the cocoon. Mixing of the jet plasma and the shocked intracluster medium through the Kelvin--Helmholtz instability at the interface enhances X-ray emissions around the contact discontinuity between the cocoon and shocked intracluster medium.
