A luminous radio burst was recently detected in temporal coincidence with a hard X-ray flare from the Galactic magnetar SGR 1935+2154 with a time and frequency structure consistent with cosmological fast radio bursts (FRBs) and a fluence within a factor of ≲10 of the least energetic extragalactic FRB previously detected. Although active magnetars are commonly invoked FRB sources, several distinct mechanisms have been proposed for generating the radio emission that make different predictions for the accompanying higher-frequency radiation. We show that the properties of the coincident radio and X-ray flares from SGR 1935+2154, including their approximate simultaneity and relative fluence ##IMG## [http://ej.iop.org/images/2041-8205/899/2/L27/apjlabac57ieqn1.gif] {${E}_{\mathrm{radio}}/{E}_{{\rm{X}}}\sim {10}^{-5}$} , as well as the duration and spectrum of the X-ray emission, are consistent with extant predictions for the synchrotron maser shock model. Rather ...

中文翻译：

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银河系电磁波对快速无线电爆发的影响

最近在时间上检测到一个发光的无线电脉冲，与来自银河系磁星SGR 1935 + 2154的硬X射线耀斑相吻合，其时间和频率结构与宇宙学快速无线电脉冲（FRB）一致，并且通量在of10的范围内先前检测到的能量最低的河外FRB。尽管有源磁星通常被称为FRB源，但是已经提出了几种不同的机制来生成无线电发射，这些无线电发射对伴随的高频辐射做出不同的预测。我们显示了SGR 1935 + 2154的重合的无线电和X射线耀斑的性质，包括它们的近似同时性和相对通量## IMG ## [http://ej.iop.org/images/2041-8205/899 /2/L27/apjlabac57ieqn1.gif] {$ {E} _ {\ mathrm {radio}} / {E} _ {{\ rm {X}}} \ sim {10} ^ {-5} $}，以及X射线发射的持续时间和光谱与同步加速器maser激波模型的现有预测一致。而是...