| ESO 113-G010的一对准周期振荡信号 |
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| 引用本文： | 张鹏,颜景志,刘庆忠.ESO 113-G010的一对准周期振荡信号[J].天文学报,2020,61(1):2. |
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| 作者姓名： | 张鹏 颜景志 刘庆忠 |
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| 作者单位： | 中国科学院紫金山天文台暗物质与空间天文重点实验室南京210033;中国科学院大学北京100049,中国科学院紫金山天文台暗物质与空间天文重点实验室南京210033,中国科学院紫金山天文台暗物质与空间天文重点实验室南京210033;中国科学技术大学空间科学与天文学院合肥230026 |
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| 基金项目： | 国家自然科学基金项目(11433009、11573071、11673067、11733009)资助 |
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| 摘 要： | 2005年11月XMM-Newton望远镜对窄线赛弗特星系ESO 113-G010进行了长达100 ks的观测.采用Lomb-Scargle周期图(LSP)法和加权小波Z变换(Weighted Wavelet Z-transform,WWZ)两种方法对数据进行分析,发现存在着～2.24 11和～4.09 h准周期振荡(Quasi-Periodic Oscillation,QPO),其置信度分别为7.3σ和4.8σ.这两个QPO信号的周期具有大约1:2 (1:1.83)的关系.在该源的其他的观测中并没有发现QPO信号,表明这是一种暂现现象.ESO 113-G010中心黑洞的质量MBH和其QPO频率f_(QPO)满足已知的从恒星级黑洞到超大质量黑洞的质量与QPO频率之间的对数线性关系.该源的能谱分析显示在1 keV以下有软X射线超的现象.
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| 关 键 词： | 星系: 赛弗特星系 活动星系核: 个别: ESO 113-G010 准周期振荡 方法: Lomb-Scargle周期图(LSP) 方法: 加权小波Z变换(WWZ) |
| 收稿时间： | 2019/5/28 0:00:00 |
Two Quasi-periodic Oscillations in ESO 113-G010 |
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| ZHANG Peng,YAN Jing-zhi and LIU Qing-zhong.Two Quasi-periodic Oscillations in ESO 113-G010[J].Acta Astronomica Sinica,2020,61(1):2. |
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| Authors: | ZHANG Peng YAN Jing-zhi and LIU Qing-zhong |
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| Institution: | Key Laboratory for Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033;University of Chinese Academy of Sciences, Beijing 100049,Key Laboratory for Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033 and Key Laboratory for Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033;School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026 |
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| Abstract: | In the Narrow-line Seyfert Galaxy (NLS1) ESO 113-G010, two Quasi-Periodic Oscillation (QPO) signals are detected in the XMM-Newton data collected in 2005 November. XMM-Newton has an exposure more than 100 ks in the energy range 0.3--10keV. The data was analyzed using the Lomb-Scargle Periodogram (LSP) and the Weighted Wavelet Z-transform (WWZ) method. It was found that there were sim2.24hours and sim4.09hours QPO in the observations with the confidence of 7.3sigma and 4.8sigma, respectively. The two QPO signals have a relationship of approximately 1:2 (1:1.83). The absence of QPOs in other observations of the object suggests that it is a transient phenomenon. The relationship between the mass of the ESO 113-G010 central black hole (BH) $M_BH$ and its frequency $ f_QPO$ satisfies the similar logarithmic linear relationship in highly accreting BH systems, from BH X-ray binaries to supermassive BHs. The energy spectrum analysis reveals that the source has a soft excess below 1keV. |
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| Keywords: | galaxies: Seyfert AGN: individual: ESO 113-G010 quasi-periodic oscillation methods: Lomb-Scargle periodogram (LSP) methods: weighted wavelet Z-transform (WWZ) |
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