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2008年5月,SGR 1627-41的突发激活

The 2008 May burst activation of SGR 1627-41

P. Esposito, G. L. Israel, S. Zane, F. Senziani, R. L. C. Starling, N. Rea, D. M. Palmer, N. Gehrels, A. Tiengo, A. De Luca, D. Götz, S. Mereghetti, P. Romano, … 展开作者

P. Esposito, G. L. Israel, S. Zane, F. Senziani, R. L. C. Starling, N. Rea, D. M. Palmer, N. Gehrels, A. Tiengo, A. De Luca, D. Götz, S. Mereghetti, P. Romano, T. Sakamoto, S. D. Barthelmy, L. Stella, R. Turolla, M. Feroci, V. Mangano

摘要:

2008年5月,软伽马射线中继站SGR 1627-41在经历了近十年的沉寂后恢复了爆发活动。在探测到一个明亮的爆发后,斯威夫特在不到五个小时的时间里将X射线望远镜指向了爆发源的方向,并跟踪了五个多星期。在本文中,我们提出了一个分析的数据,从这些斯威夫特观测和XMM牛顿一个执行时,SGR 1627-41仍然处于静止状态。对Swift/BAT探测到的爆发的分析表明,它们的时间和光谱特性与SGR 1627-41和其他软伽马射线中继站以前的观测结果相似。爆发的最大峰值亮度约为2 E +41 erg/s。我们的数据表明,爆发伴随着快速的流量增强和硬化的光谱相对于持久的排放。

英文摘要:

In May 2008 the soft gamma-ray repeater SGR 1627-41 resumed its bursting activity after nearly a decade of quiescence. After detection of a bright burst, Swift pointed its X-ray telescope in the direction of the source in less than five hours and followed it for over five weeks. In this paper we present an analysis of the data from these Swift observations and an XMM-Newton one performed when SGR 1627-41 was still in a quiescent state. The analysis of the bursts detected with Swift/BAT shows that their temporal and spectral properties are similar to those found in previous observations of SGR 1627-41 and other soft gamma-ray repeaters. The maximum peak luminosity of the bursts was about 2E+41 erg/s. Our data show that the outburst was accompanied by a fast flux enhancement and by a hardening of the spectrum with respect to the persistent emission.

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