论文标题
双射线银河TRG J104454+354055
The Twin Radio galaxy TRG J104454+354055
论文作者
论文摘要
我们报告了升级的巨型Metrewave Radio望远镜（$ U $ GMRT）的明亮哑铃系统（$ z = 0.162 $）的明亮哑铃系统（$ z = 0.162 $）的观察，这表明，该重力绑定的星系中的每个成员托管了100千座尺度上的双极无线电。以前仅报道了这种无线电形态的两例，既是哑铃系统。著名的第一个例子3c 75是在4年前发现的，第二个案例是在3年前发现的。这意味着这样的“双 - 拉迪奥 - 加拉克斯”（TRG）是一种极为罕见的现象。就像其两个高级表亲一样，本trg的双极无线电喷射（J104454+354055）表现出强大的摇摆，并且是边缘漆黑的（Fanaroff-Riley I类）。但是，也存在重要的差异。例如，当前TRG中的喷射器不会合并，此外，由于外部的横风率没有显示失真的迹象。这使得当前的TRG成为研究（侧面）相对论等离子体的（侧面）碰撞喷射的物理学的更整洁的实验室。该TRG有另一个属于同一组的明亮星系托管的广角尾（WAT）邻居，似乎正在朝向TRG。
We report observations of a bright dumb-bell system of galaxies ($z =0.162$) with the upgraded Giant Metrewave Radio Telescope ($u$GMRT), which show that each member of this gravitationally bound pair of galaxies hosts bipolar radio jets extended on 100 kiloparsec scales. Only two cases of such radio morphology have been reported previously, both being dumb-bell systems, as well. The famous first example, 3C 75, was discovered 4 decades ago, and the second case was discovered 3 decades ago. This implies that such `Twin-Radio-Galaxies' (TRGs) are an exceedingly rare phenomenon. As in the case of its two senior cousins, the bi-polar radio jets of the present TRG (J104454+354055) exhibit strong wiggles and are edge-darkened (Fanaroff-Riley class I). However, there are important differences, too. For instance, the jets in the present TRG do not merge and, moreover, show no signs of distortion due to an external crosswind. This makes the present TRG a much neater laboratory for studying the physics of (sideway) colliding jets of relativistic plasma. This TRG has a Wide-Angle-Tail (WAT) neighbour hosted by another bright galaxy belonging to the same group, which appears to be moving towards the TRG.
