Jet impact in galaxy groups and clusters via LOFAR extragalactic surveys

通过 LOFAR 河外巡天喷射流对星系群和星系团的影响

• 批准号: ST/R000794/1
• 负责人: Judith Croston
• 金额: $ 20.18万
• 依托单位: The Open University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FR000794%2F1
• 关键词: Jet; impact; galaxy; groups; clusters

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).

星系外喷流是由落在星系中心超大质量黑洞上的物质提供动力的，并充当宇宙发动机，将能量输送到更广阔的星系，甚至更远的星系间空间。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现在状态的一个重要的未解决问题。这个项目利用了来自低频阵列（LOFAR）的新的低频无线电调查，它为本地和遥远宇宙中非常大的喷流样本提供了喷流结构的详细图像。这些新数据集的统计能力将使许多长期存在的关于河外喷流及其环境的问题得到解答。通过将LOFAR调查与其他波长的信息（例如x射线，红外和光学观测）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射流传输多少能量的能力，并开发出确定高红移射流能量最终在哪里的方法（因此它如何影响星系和星系群/星系团的演化过程）。

项目成果

The life cycle of radio galaxies in the LOFAR Lockman Hole field

LOFAR 洛克曼洞射电星系的生命周期

• DOI: 10.1051/0004-6361/201936955
• 发表时间: 2020
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Jurlin N

Finding Rare Quasars: VLA Snapshot Continuum Survey of FRI Quasar Candidates Selected from the LOFAR Two-Metre Sky Survey (LoTSS)

寻找稀有类星体：从 LOFAR 两米巡天 (LoTSS) 中选出的 FRI 类星体候选者的 VLA 快照连续观测

• DOI: 10.3390/galaxies10010002
• 发表时间: 2021
• 期刊: Galaxies
• 影响因子: 2.5
• 作者: Gürkan G

The X-ray ribs within the cocoon shock of Cygnus A

天鹅座 A 茧激波内的 X 射线肋骨

• DOI: 10.1093/mnras/sty549
• 发表时间: 2018
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Duffy R

The application of ridgelines in extended radio source cross-identification

山脊线在扩展射电源交叉识别中的应用

• DOI: 10.1093/mnras/stab2952
• 发表时间: 2022
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Barkus B

Radio galaxies and feedback from AGN jets

• DOI: 10.1016/j.newar.2020.101539
• 发表时间: 2020-03
• 期刊: New Astronomy Reviews
• 影响因子: 6
• 作者: M. Hardcastle;J. Croston