论文标题
触发FRI喷气机中的混合和减速：解决方案
Triggering mixing and deceleration in FRI jets: a solution
论文作者
论文摘要
自从Fanaroff＆Riley（1974）报道了放疗的形态学和亮度二分法以来，很明显，在中央闪烁，较小，强大的FRI来源中，喷气机和反射流的对称发射可能是由JET减速引起的，许多作品都解决了可能引起这种差异的不同机制。最近的观察结果似乎表明，减速必须是由于在射流边界上强制混合的小规模不稳定性引起的。根据这些结果，混合层沿着几千2杆延伸并传播到射流轴，直到覆盖整个射流横截面为止。已经提出了几种候选机制，是产生这种混合层的初始触发因素。但是，到目前为止提出的不稳定性尚未完全解释周五喷气机和/或需要触发机制的观察结果。因此，对于射流减速的原始原因，仍然没有令人满意的解释。在这封信中，我表明，来自喷气机的恒星的穿透（和退出）可以通过创建跨喷气机上扩展的喷气媒介媒介介质混合层来提供足够的解释。
Since Fanaroff & Riley (1974) reported the morphological and brightness dichotomy of radiogalaxies, and it became clear that the symmetric emission from jets and counter-jets in the centre-brightened, less powerful, FRI sources could be caused by jet deceleration, many works have addressed different mechanisms that could cause this difference. Recent observational results seem to indicate that the deceleration must be caused by the development of small-scale instabilities that force mixing at the jet boundary. According to these results, the mixing layer expands and propagates down to the jet axis along several kiloparsecs, until it covers the whole jet cross-section. Several candidate mechanisms have been proposed as the initial trigger for the generation of such mixing layer. However, the instabilities proposed so far do not fully manage to explain the observations of FRI jets and/or require a triggering mechanism. Therefore, there is not still a satisfactory explanation for the original cause of jet deceleration. In this letter, I show that the penetration (and exit) of stars from jets could give the adequate explanation by means of creating a jet-interstellar medium mixing layer that expands across the jet.
