The origin and phenomenology of the Fast Radio Burst (FRB) remains unknown despite more than a decade of efforts. Though several models have been proposed to explain the observed data, none is able to explain alone the variety of events so far recorded. The leading models consider magnetars as potential FRB sources. The recent detection of FRBs from the galactic magnetar SGR J1935+2154 seems to support them. Still, emission duration and energetic budget challenge all these models. Like for other classes of objects initially detected in a single band, it appeared clear that any solution to the FRB enigma could only come from a coordinated observational and theoretical effort in an as wide as possible energy band. In particular, the detection and localisation of optical/NIR or/and high-energy counterparts seemed an unavoidable starting point that could shed light on the FRB physics. Multiwavelength (MWL) search campaigns were conducted for several FRBs, in particular for repeaters. Here we summarize the observational and theoretical results and the perspectives in view of the several new sources accurately localised that will likely be identified by various radio facilities worldwide. We conclude that more dedicated MWL campaigns sensitive to the millisecond–minute timescale transients are needed to address the various aspects involved in the identification of FRB counterparts. Dedicated instrumentation could be one of the key points in this respect. In the optical/NIR band, fast photometry looks to be the only viable strategy. Additionally, small/medium size radiotelescopes co-pointing higher energies telescopes look a very interesting and cheap complementary observational strategy.

中文翻译：

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快速无线电爆发的多波长观测

尽管经过十多年的努力，快速无线电爆发（FRB）的起源和现象学仍然未知。尽管已经提出了几种模型来解释观测到的数据，但是没有一个模型能够单独解释迄今为止记录的各种事件。领先的模型将磁星视为潜在的FRB源。最近从银河磁星SGR J1935 + 2154中检测到FRB似乎支持了它们。尽管如此，排放持续时间和精力充沛的预算挑战了所有这些模型。就像最初在单个频带中检测到的其他类别的物体一样，很明显，对FRB谜的任何解决方案都只能来自在尽可能宽的能带中的协调观测和理论努力。尤其是，光学/近红外或/和高能对应物的检测和定位似乎是不可避免的起点，可以为FRB物理学提供启示。针对多个FRB（特别是针对中继器）进行了多波长（MWL）搜索活动。在这里，我们总结了观测和理论结果以及基于准确定位的几个新来源的观点，这些新来源很可能会被全球范围内的各种无线电设施所识别。我们得出结论，需要更敏感的毫秒级时标瞬变敏感的MWL运动，以解决识别FRB对应项所涉及的各个方面。专用仪器可能是这方面的关键点之一。在光学/近红外波段，快速测光似乎是唯一可行的策略。此外，