AI 中文总结
该研究聚焦不规则射电星系，结合SKA连续谱巡天数据与多方法识别分类，以探究射电形态与星系属性、AGN活动等的关联及相关宇宙学问题。
AI 中文摘要
射电星系呈现出丰富多样的形态，从规则的双瓣系统到更为复杂、扭曲的射电结构不等。本章中，我们聚焦于不规则射电形态，将其定义为射电喷流与瓣偏离直且对称结构的源，弯尾射电星系和翼状射电星系是这类源的两个重要实例。弯尾射电星系呈现弯曲的喷流或瓣，主要由射电等离子体与致密的星系团内或星系群内介质的相互作用塑造；翼状射电星系则呈现微弱的 off-axis 发射，可能与等离子体回流、喷流重定向、间歇性活动、星系并合或环境不对称性相关。平方公里阵列（SKA）连续谱巡天将提供识别和研究这类不规则射电星系大样本所需的灵敏度、角分辨率、频率覆盖范围及图像质量，这些数据可探测到弥散尾、弱桥、残余瓣和低表面亮度翼等微弱延展结构。这类源的识别与分类需结合机器学习方法、定量形态测量、多波段寄主星系关联及专家目视检查，利用SKA数据开展不规则射电星系研究，将有助于建立射电形态与寄主星系属性、活动星系核（AGN）活动、喷流功率及周围环境的关联，为理解喷流-环境相互作用、AGN反馈、星系群与星系团的动力学状态及射电星系在宇宙时间中的演化提供重要见解。
英文摘要
Radio galaxies show a wide range of morphologies, from regular double-lobed systems to more complex and distorted radio structures. In this chapter, we focus on irregular radio morphologies, defined as sources in which the radio jets and lobes deviate from a straight and symmetric structure. Bent-tail radio galaxies and winged radio galaxies are two important examples of such sources. Bent-tail radio galaxies show curved jets or lobes, mainly shaped by the interaction between radio plasma and the dense intracluster or intragroup medium. Winged radio galaxies show faint off-axis emission, which may be related to plasma backflow, jet reorientation, episodic activity, galaxy mergers, or environmental asymmetry. The Square Kilometre Array (SKA) continuum surveys will provide the sensitivity, angular resolution, frequency coverage, and image quality required to identify and study large samples of such irregular radio galaxies. These data will make it possible to detect faint extended structures, including diffuse tails, weak bridges, remnant lobes, and low-surface-brightness wings. The identification and classification of these sources will require a combination of machine-learning methods, quantitative morphology measurements, multi-wavelength host-galaxy association, and expert visual inspection. The study of irregular radio galaxies with SKA data will help to connect radio morphology with host-galaxy properties, Active Galactic Nucleus (AGN) activity, jet power, and surrounding environment. Such studies will provide important insight into jet-environment interactions, AGN feedback, the dynamical state of galaxy groups and clusters, and the evolution of radio galaxies across cosmic time.
CommentsPublished in Advancing Astrophysics with the SKA II (AASKAII), 2026 (arXiv:2606.20366). Report-no:AASKAII/Sasmal01. Advancing Astrophysics with the SKA II (AASKAII) outlines the transformative scientific advances that will be enabled by the SKA telescopes
