期刊
ASTRONOMY & ASTROPHYSICS
卷 529, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201016197
关键词
pulsars: individual: 1E 1547.0-5408; stars: magnetars; stars: magnetic field; X-rays: stars
资金
- ESA
- USA through NASA
- Autonomous Region of Sardinia
- French Space Agency (CNES)
- ASI (ASI/INAF) [I/088/06/0, I/011/07/0, AAE TH-058, AAE DA-044, AAE DA-006]
- STFC [ST/H00260X/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H00260X/1] Funding Source: researchfish
Context. 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. Aims. Thanks to extensive X-ray observations, obtained both in the quiescent and active states, 1E 1547.0-5408 represents a very promising laboratory to gain insight into the outburst properties and magnetar emission mechanisms. Methods. We performed a detailed timing and spectral analysis of four Chandra, three INTEGRAL, and one XMM-Newton 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. Results. 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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据