标题： 恒星-行星相互作用的无线电特征，系外行星和空间天气 显示英文标题

标题： Radio Signatures of Star-Planet Interactions, Exoplanets, and Space Weather

摘要： 无线电检测恒星系统为研究恒星磁活动和系外行星的空间天气条件提供了窗口，这些信息在其他波长上难以获得。 最近在观测射电明亮的低质量恒星和系外行星的极光发射方面取得了进展，这主要是由于低频射电仪器的成熟以及广泛场射电调查的大量出现。 为了帮助我们将这些最新结果置于适当的背景中，我们介绍了最接近的本地类比： 太阳爆发和木星上的极光。 我们详细说明了与恒星耀斑相关的射电爆发对于研究恒星日冕的基础性作用，并且时间分辨的射电动态光谱是探测和表征其他恒星日冕物质抛射的最佳前景之一。 我们强调直接探测系外行星磁层相干射电辐射的前景以及早期的初步结果。 我们将这一讨论延伸到棕矮星射电辐射领域，在该领域，其更大更强的磁层可以通过当前仪器进行详细研究。 从恒星与近距离行星之间的磁相互作用中也预测会有明亮的相干射电辐射。 我们讨论了这些相互作用的基本物理机制，并探讨了近期初步检测对系外行星表征的意义。 最后，我们概述了恒星、恒星-行星相互作用和系外行星射电辐射理论中的未解问题，以及未来设施在回答这些问题方面的前景。 显示英文摘要

摘要： Radio detections of stellar systems provide a window onto stellar magnetic activity and the space weather conditions of extrasolar planets, information that is difficult to attain at other wavelengths. There have been recent advances observing auroral emissions from radio-bright low-mass stars and exoplanets largely due to the maturation of low-frequency radio instruments and the plethora of wide-field radio surveys. To guide us in placing these recent results in context, we introduce the foremost local analogues for the field: Solar bursts and the aurorae found on Jupiter. We detail how radio bursts associated with stellar flares are foundational to the study of stellar coronae, and time-resolved radio dynamic spectra offers one of the best prospects of detecting and characterising coronal mass ejections from other stars. We highlight the prospects of directly detecting coherent radio emission from exoplanetary magnetospheres, and early tentative results. We bridge this discussion to the field of brown dwarf radio emission, in which their larger and stronger magnetospheres are amenable to detailed study with current instruments. Bright, coherent radio emission is also predicted from magnetic interactions between stars and close-in planets. We discuss the underlying physics of these interactions and implications of recent provisional detections for exoplanet characterisation. We conclude with an overview of outstanding questions in theory of stellar, star-planet interaction, and exoplanet radio emission, and the prospects of future facilities in answering them.