广角尾翼(WAT)无线电源

IF 3.2 Q2 ASTRONOMY & ASTROPHYSICS
Galaxies Pub Date : 2023-05-12 DOI:10.3390/galaxies11030067
C. O’Dea, S. Baum
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引用次数: 2

摘要

本文综述了广角尾射电源的特性。WAT射电源是强大的弯曲射电源,通常与星系团或星群中的主导星系有关。为了进行回顾,我们将WATs的射电形态学定义为(1)突然的喷气尾过渡,(2)尾部向一侧的整体弯曲,以及(3)非平行尾部。喷射尾快速转变的机制尚不确定,但它似乎发生在从宿主ISM到ICM的转变附近。射流尾部的过渡可能使射流更容易弯曲。如果存在允许喷流不受干扰地传播数十kpc所需的最小光度和允许喷流破坏机制起作用所需的最大光度,则可以理解射电光度的狭窄范围。WATs通常由正在合并的星系团中最亮的星系团组成。因此,WATs可以用作合并集群的跟踪器。合并在ICM中产生大规模的大块运动,这可以提供足够的冲压压力来弯曲射流。我们认为,虽然洛伦兹力可能不会使WATs中的喷流弯曲,但它可能与其他来源有关,例如原恒星喷流。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Wide-Angle-Tail (WAT) Radio Sources
We review the properties of Wide-Angle-Tail (WAT) radio sources. The WAT radio sources are powerful, bent radio sources typically associated with the dominant galaxy in a cluster or group. For the purpose of this review, we define the radio morphology properties of WATs as (1) a sudden jet-tail transition, (2) overall bending of the tails to one side, and (3) non-parallel tails. The mechanism for the rapid jet-tail transition is uncertain but it seems to occur near the transition from the host ISM to ICM. The jet-tail transition may make the jets easier to bend. The narrow range in radio luminosity can be understood if there is a minimum luminosity required to allow the jets to propagate undisturbed for tens of kpc and a maximum luminosity required to allow the jet disruption mechanism to act. WATs are typically hosted by the brightest cluster galaxies in clusters which are currently merging. Thus, WATs can be used as tracers of merging clusters. The merging produces large-scale bulk motions in the ICM which can provide sufficient ram pressure to bend the jets. We suggest that although the Lorentz force may not bend the jets in WATs, it may be relevant in other sources, e.g., protostellar jets.
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来源期刊
Galaxies
Galaxies Physics and Astronomy-Astronomy and Astrophysics
CiteScore
4.90
自引率
12.00%
发文量
100
审稿时长
11 weeks
期刊介绍: Es una revista internacional de acceso abierto revisada por pares que proporciona un foro avanzado para estudios relacionados con astronomía, astrofísica y cosmología. Areas temáticas Astronomía Astrofísica Cosmología Astronomía observacional: radio, infrarrojo, óptico, rayos X, neutrino, etc. Ciencia planetaria Equipos y tecnologías de astronomía. Ingeniería Aeroespacial Análisis de datos astronómicos. Astroquímica y Astrobiología. Arqueoastronomía Historia de la astronomía y cosmología. Problemas filosóficos en cosmología.
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