Relativistic Kinetic Reconnection as the Possible Source Mechanism for High Variability and Flat Spectra in Extragalactic Radio Sources
Relativistic Kinetic Reconnection as the Possible Source Mechanism for High Variability and Flat Spectra in Extragalactic Radio Sources
复制标题
相对论动力学重联作为河外射电源高变异性和平坦光谱的可能源机制
DOI：
10.1086/420767
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
R. Treumann
中科院分区：
文献类型：
--
作者：
C. Jaroschek;H. Lesch;R. Treumann
我们提出了第一个同步功率谱的自洽动力学重联方案在高度相对论制度的对等离子体。一个完全电磁相对论的粒子在细胞的代码被用来研究后期的动力学磁重联的演化在高分辨率的总合奏超过108个粒子。我们显示（1）的重联区域的非热粒子的产生，（2）有效的同步辐射的粒子加速分数的非常动态的后期演化的重要性，和（3）对占主导地位的活动星系核核心区域的模拟结果的应用程序-“轻”喷流的假定起源。我们认为，相对论性区域中的无碰撞动力学重联能够解释某些发光日内变星中P ~ 1047 ergs ~（-1）的巨大功率输出以及平谱射电类星体中极难观测到的射电谱。
We present the first synchrotron power spectra of a self-consistent kinetic reconnection scenario in the highly relativistic regime of a pair plasma. A fully electromagnetic relativistic particle-in-cell code is used to study the late-time evolution of kinetic magnetic reconnection at high resolution with a total ensemble of more than 108 particles. We show (1) the importance of the extremely dynamic late-time evolution of the reconnection region for the generation of nonthermal particles, (2) the efficient synchrotron emission by the accelerated fraction of particles, and (3) the application of the simulation results to pair-dominated active galactic nucleus core regions—the presumable origin of "light" jets. We conclude that collisionless kinetic reconnection in the relativistic regime is capable of explaining the enormous power output of P ~ 1047 ergs s-1 in certain luminous intraday variable quasars and the extremely hard observed radio spectra of flat-spectrum radio quasars.