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arXiv 2203.04890astro-ph.HE
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快速射电暴的低频透视

The Low Frequency Perspective on Fast Radio Bursts

Maura Pilia

摘要:

快速射电暴(FRB)是近年来最令人兴奋的天体物理发现之一。对它们低频发射的研究,在它们被发现后大约十年才被有效地发现,由于迄今为止一些最重要的探测,它帮助塑造了这个领域。特别是CHIME/FRB望远镜在400和800 MHz之间进行的观测,在一年多一点的时间里探测到了约500个FRB,其中有约20个重复源。低频率的检测发现了附近的人口,我们可以通过持续的监测和有针对性的活动来详细研究。最新的、最重要的发现包括:周期性,在重复源中为天级,在明显非重复源中为毫秒级;检测到来自银河系磁星的FRB样爆发;以及在附近星系的球状星团内定位FRB。系统地研究低频率下的种群对于表征FRB周围的环境以及在全球水平上理解局部宇宙的环境非常重要。本次审查的目的是提供一个概述的努力,导致目前丰富的各种低频研究,并把一个共同的背景下取得的成果,以跟踪该领域的未来进展的可能路线图。

英文摘要:

Fast radio bursts (FRBs) represent one of the most exciting astrophysical discoveries of the recent past. The study of their low-frequency emission, which was only effectively picked up about ten years after their discovery, has helped shape the field thanks to some of the most important detections to date. Observations between 400 and 800 MHz, carried out by the CHIME/FRB telescope, in particular, have led to the detection of ~500 FRBs in little more than 1 year and, among them, ~20 repeating sources. Detections at low frequencies have uncovered a nearby population that we can study in detail via continuous monitoring and targeted campaigns. The latest, most important discoveries include: periodicity, both at the days level in repeaters and at the millisecond level in apparently non-repeating sources; the detection of an FRB-like burst from a galactic magnetar; and the localisation of an FRB inside a globular cluster in a nearby galaxy. The systematic study of the population at low frequencies is important for the characterisation of the environment surrounding the FRBs and, at a global level, to understand the environment of the local universe. This review is intended to give an overview of the efforts leading to the current rich variety of low-frequency studies and to put into a common context the results achieved in order to trace a possible roadmap for future progress in the field.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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