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arXiv 1504.07249astro-ph.HE
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与雨燕超巨星快速X射线瞬变项目合作七年

Seven Years with the Swift Supergiant Fast X-ray Transients Project

P. Romano

摘要:

超巨星快速X射线瞬变(SFXTs)是有OB超巨星伴星的HMXB。我回顾的斯威夫特SFXT项目,自2007年以来一直利用斯威夫特的能力,在系统的研究SFXTs和超巨星X射线二进制文件(SGXB)相结合的后续行动的爆发,详细的宽带光谱是可能的,与长期的监测活动,当爆发微弱的状态可以观察到的结果。这种策略使我们能够测量它们的占空比作为亮度的函数,提取它们在软X射线域中的差分亮度分布,并以前所未有的细节来比较这些不同类别的源中的X射线可变性。我还讨论了“第七年危机”,挑战,最近的斯威夫特的意见,试图解释SFXT行为的流行模型。

英文摘要:

Supergiant Fast X-ray Transients (SFXTs) are HMXBs with OB supergiant companions. I review the results of the Swift SFXT Project, which since 2007 has been exploiting Swift's capabilities in a systematic study of SFXTs and supergiant X-ray binaries (SGXBs) by combining follow-ups of outbursts, when detailed broad-band spectroscopy is possible, with long-term monitoring campaigns, when the out-of-outburst fainter states can be observed. This strategy has led us to measure their duty cycles as a function of luminosity, to extract their differential luminosity distributions in the soft X-ray domain, and to compare, with unprecedented detail, the X-ray variability in these different classes of sources. I also discuss the "seventh year crisis", the challenges that the recent Swift observations are making to the prevailing models attempting to explain the SFXT behaviour.

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。

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