arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1102.5419astro-ph.HE
收藏

2009年1月周期候选磁星1 E 1547.0-5408爆发的多仪器X射线监测

Multi-instrument X-ray monitoring of the January 2009 outburst from the recurrent magnetar candidate 1E 1547.0-5408

F. Bernardini, G. L. Israel, L. Stellaınst, R. Turolla, P. Esposito, N. Rea, S. Zane, A. Tiengo, S. Campana, D. Gotz, S. Mereghetti, P. Romano

摘要:

1 E 1547.0-5408在四个月内连续两次爆发(2008年10月和2009年1月),并可能在2007年发生第三次爆发,是迄今为止已知的最活跃的瞬态异常X射线爆发之一。由于在静止和活动状态下获得的广泛的X射线观测,1 E 1547.0-5408代表了一个非常有前途的实验室,可以深入了解爆发特性和磁星发射机制。我们进行了详细的时间和光谱分析的四个钱德拉,三个积分,和一个XMM观测收集了两个星期的时间间隔后,爆发发生在2009年1月。几个雨燕点,涵盖了1.5年的时间间隔,也进行了分析,以监测衰减的X射线通量。我们比较了这两个爆发的特点,以及活跃和静止状态。我们还讨论了1 E 1547.0-5408自1980年首次探测以来的长期X射线通量历史,表明该源具有低、中和高三个通量水平。

英文摘要:

With two consecutive outbursts recorded in four months (October 2008 and January 2009), and a possible third outburst in 2007, 1E 1547.0-5408 is one of the most active transient anomalous X-ray pulsars known so far. Thanks to extensive X-ray observations, obtained both in the quiescent and active states, 1E 1547.0-5408 represents a very promising laboratory to get insights into the outburst properties and magnetar emission mechanisms. We performed a detailed timing and spectral analysis of four Chandra, three INTEGRAL, and one XMM observations collected over a two week interval after the outburst onset in January 2009. Several Swift pointings, covering a 1.5 year interval, were also analyzed in order to monitor the decay of the X-ray flux. We compare the characteristics of the two outbursts, as well as those of the active and quiescent states. We also discuss the long-term X-ray flux history of 1E 1547.0-5408 since its first detection in 1980, and show that the source displays three flux levels: low, intermediate and high.

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。

↑