磁化星系际介质中相对论性喷流的输运
Transport of relativistic jet in the magnetized intergalactic medium
摘要：
磁场对星系际介质中相对论性喷流输运的动力学效应，特别是垂直分量的动力学效应还不确定。通过粒子模拟，我们发现当只有喷流电子被完全磁化时，它们会被磁场直接偏转，而喷流质子则主要被集体电荷分离电场拖曳.然而，当电子和质子都被完全磁化时，情况正好相反。它们的平衡极大地扭曲了喷流密度和电磁场，导致不同物种和场之间的巨大能量交换。结果表明，随着磁场强度的增加，电子能谱的能量分布（SED）得到了重塑，并且SED的幂律斜率减小。换句话说，我们可以推断相对论性喷流周围的磁场在形成观测到的SED中起着至关重要的作用。
英文摘要：
The kinetic effects of magnetic fields on the transport of relativistic jet in the intergalactic medium remain uncertain, especially for their perpendicular component. By particle-in-cell simulations, we find that when only jet electrons are fully magnetized, they are directly deflected by the magnetic field, but jet protons are mainly dragged by collective charge-separation electric field. However, when both electrons and protons are fully magnetized, the contrary is the case. Their balance tremendously distorts the jet density and electromagnetic fields, leading to enormous energy exchange between different species and fields. As a result, the electron spectrum energy distribution (SED) gets reshaped and the power law slope of the SED decreases as the magnetic field strength increases. In other words, we may infer that magnetic fields around the relativistic jet play a crucial role in shaping the observed SED.
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