论文标题
X射线和无线电爆发来自Magnetar 1E1547.0-5408
X-ray and Radio Bursts from the Magnetar 1E1547.0-5408
论文作者
论文摘要
我们报告了2009年1月25日和2月3日的电台发射磁铁1E1547.0-5408的同时收音机和X射线观察，其中64米的Parkes射电望远镜以及Chandra和Chandra和XMM-Newton XMM-Newton X射线观察者。在激烈的X射线爆发活性和增强的X射线发射时观察到磁力。我们在这里报告了1E1547.0-5408的两次无线电爆发，让人联想到快速无线电爆发（FRB）。一个无线电爆发预计会通过明亮的SGR样X射线爆发来预计约1s（大约一半的旋转周期），从而导致f_radio/f_x〜10^-9。在观察过程中未检测到无线电搏动，显示了FRB样无线电爆发，而在先前的无线电观察中被检测到。我们还发现，两个无线电爆发既不与后者的无线电搏动对准，也不与X射线脉冲曲线的峰（〜0.2的相位移位）对齐。比较这些类似FRB的爆发的光度以及SGR1935+2154中报道的亮度，我们发现银河系中的无线电效率和/或光度的范围很大，可能会弥合“普通” Pulsar无线电脉冲之间的间隙和外层次FRB现象之间的差距。
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.
