Jet impact in galaxy groups and clusters via LOFAR extragalactic surveys

河外喷流由落在星系中心超大质量黑洞上的物质提供动力，并充当宇宙发动机，将能量输送到更广阔的星系和更远的星系际空间。这些喷流在星系形成中的作用是理解我们的宇宙如何演变到目前状态的一个重要的未解决问题。该项目利用了低频阵列新的低频无线电观测，这些观测提供了本地和遥远宇宙中大量喷流样本的喷流结构的详细图像。这些新数据集的统计能力将使许多关于河外喷流及其环境的长期问题得到解答。通过将LOFAR调查与其他波长（例如X射线，红外和光学观测）的信息相结合，我们的目标是解决长期存在的问题，这些问题限制了我们测量喷流传输多少能量的能力，并开发确定高红移喷流能量最终到达何处的方法（以及它如何影响星系和星系群/星系团的演化过程）。

Extragalactic jets are powered by matter falling onto supermassive black holes in galaxy centres, and act as cosmic engines transporting energy out into the wider galaxy and beyond into intergalactic space. The role of these jets in galaxy formation is an important unsolved problem in understanding how our Universe evolved to its current state. This project makes use of new low-frequency radio surveys from the Low-frequency Array (LOFAR), which are providing detailed images of jet structures for very large samples of jets in the local and distant Universe. The statistical power of these new datasets will allow many long-standing questions about extragalactic jets and their environments to be answered. By combining LOFAR surveys with information from other wavelengths (e.g. X-ray, infrared and optical observations) we aim to solve long-standing problems that limit our ability to measure how much energy the jets transport, and to develop ways of determining where the energy from jets at high redshifts ends up (and therefore how it affects the process of how galaxies and groups/clusters of galaxies evolve).