Insight-HXMT Observations of 4U 1636-536: Corona Cooling Revealed with Single Short Type-I X-Ray Burst
文献类型：期刊论文
| 作者 | Jin, J ; Zou, C. L. ; Zhu, Y. X.; Zhu, Y; Zheng, S. J; Zhao, X. F; Zhao, J. L; Zhao, H. S; Zhang, Z. L; Zhang, Z
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| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2018 |
| 卷号 | 864期号:2页码:L30 |
| 关键词 | stars: coronae stars: neutron X-rays: binaries X-rays: bursts X-rays: individual (4U 1636-536) |
| DOI | 10.3847/2041-8213/aadc0e |
| 英文摘要 | Corona cooling was detected previously from stacking a series of short type I bursts that occurred during the low/hard state of an atoll outburst. Type I bursts are hence regarded as sharp probes used to better our understanding of the basic properties of the corona. The first Chinese X-ray satellite, Insight-HXMT, has a large detection area at hard X-rays that provides a unique opportunity to move further in this research field. We report the first detection of corona cooling by Insight-HXMT from a single short type I burst appearing during the flare of 4U 1636-536. This type I X-ray burst has a duration of similar to 13 s and hard X-ray shortage is detected with a significance of 6.2 sigma in 40-70 keV. A cross-correlation analysis between the light curves of the soft and hard X-ray band shows that the corona shortage lags the burst emission by 1.6 +/- 1.2 s. These results are consistent with those derived previously from stacking a large amount of bursts detected by RXTE/PCA within a series of flares of 4U 1636-536. Moreover, the broad bandwidth of Insight-HXMT also allows, for the first time, one to infer the burst influence upon the continuum spectrum via performing the spectral fitting of the burst, which points to the finding that hard X-ray shortage appears at around 40 keV in the continuum spectrum. These results suggest that the evolution of the corona, along with the outburst/flare of NS XRB, may be traced via analyzing a series of embedded type I bursts using Insight-HXMT. |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000444305900001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/282275]  |
| 专题 | 硬X射线调制望远镜卫星 高能物理研究所_实验物理中心 高能物理研究所_粒子天体物理中心 高能物理研究所_理论物理室 高能物理研究所_多学科研究中心 高能物理研究所_计算中心 高能物理研究所_管理与技术支持 高能物理研究所_东莞分部 中国科学院高能物理研究所_科研计划处 中国科学院高能物理研究所_中国散裂中子源 |
| 推荐引用方式 GB/T 7714 | Jin, J,Zou, C. L. ,Zhu, Y. X.,et al. Insight-HXMT Observations of 4U 1636-536: Corona Cooling Revealed with Single Short Type-I X-Ray Burst[J]. The Astrophysical Journal,2018,864(2):L30. |
| APA | Jin, J.,Zou, C. L. .,Zhu, Y. X..,Zhu, Y.,Zheng, S. J.,...&Zhang, CM.(2018).Insight-HXMT Observations of 4U 1636-536: Corona Cooling Revealed with Single Short Type-I X-Ray Burst.The Astrophysical Journal,864(2),L30. |
| MLA | Jin, J,et al."Insight-HXMT Observations of 4U 1636-536: Corona Cooling Revealed with Single Short Type-I X-Ray Burst".The Astrophysical Journal 864.2(2018):L30. |
入库方式： OAI收割
来源：高能物理研究所
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