We report on simultaneous radio and X-ray observations of the radio-emitting magnetar 1E1547.0-5408 on 2009 January 25 and February 3, with the 64-m Parkes radio telescope and the Chandra and XMM-Newton X-ray observatories. The magnetar was observed in a period of intense X-ray bursting activity and enhanced X-ray emission. We report here on the detection of two radio bursts from 1E1547.0-5408, reminiscent of Fast Radio Bursts (FRBs). One of the radio bursts was anticipated by ~1s (about half a rotation period of the pulsar) by a bright SGR-like X-ray burst, resulting in a F_radio/F_X ~ 10^-9. Radio pulsations were not detected during the observation showing the FRB-like radio bursts, while they were detected in the previous radio observation. We also found that the two radio bursts are neither aligned with the latter radio pulsations nor with the peak of the X-ray pulse profile (phase shift of ~0.2). Comparing the luminosity of these FRB-like bursts and those reported from SGR1935+2154, we find that the wide range in radio efficiency and/or luminosity of magnetar bursts in the Galaxy may bridge the gap between "ordinary" pulsar radio bursts and the extragalactic FRB phenomenon.

中文翻译：

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来自磁星 1E 1547.0-5408 的 X 射线和无线电爆发

我们报告了 2009 年 1 月 25 日和 2 月 3 日使用 64 米帕克斯射电望远镜以及钱德拉和 XMM-牛顿 X 射线天文台对发射无线电的磁星 1E1547.0-5408 的同步无线电和 X 射线观测。磁星在一个强烈的 X 射线爆发活动和增强的 X 射线发射期间被观察到。我们在此报告检测到来自 1E1547.0-5408 的两个射电暴，让人想起快速射电暴 (FRB)。其中一个射电暴被一个明亮的类似 SGR 的 X 射线暴预测约 1 秒（大约是脉冲星自转周期的一半），导致 F_radio/F_X ~ 10^-9。在显示类似 FRB 的射电爆发的观测期间没有检测到射电脉动，而它们在之前的射电观测中被检测到。我们还发现，这两个射电暴既不与后者的射电脉动对齐，也不与 X 射线脉冲轮廓的峰值（相移约 0.2）对齐。将这些类似 FRB 的爆发与 SGR1935+2154 报告的光度进行比较，我们发现银河系中广泛的无线电效率和/或磁星爆发的光度可能会弥合“普通”脉冲星无线电爆发与河外爆发之间的差距。 FRB 现象。