DETECTION OF A POSSIBLE X-RAY QUASI-PERIODIC OSCILLATION IN THE ACTIVE GALACTIC NUCLEUS 1H 0707-495
文献类型：期刊论文
| 作者 | Pan, Hai-Wu1,2; Yuan, Weimin1,2 ; Yao, Su1,2; Zhou, Xin-Lin1; Liu, Bifang1,2; Zhou, Hongyan3,4; Zhang, Shuang-Nan1,5
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
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| 出版日期 | 2016-03-10 |
| 卷号 | 819期号:2 |
| 关键词 | galaxies: active galaxies: nuclei galaxies: individual (1H 0707-495) X-rays: galaxies |
| 英文摘要 | The quasi-periodic oscillation (QPO) detected in the X-ray radiation of black hole X-ray binaries (BHXBs) is thought to originate from dynamical processes in close vicinity of black holes (BHs), and thus carries important physical information therein. Such a feature is extremely rare in active galactic nuclei (AGNs) with supermassive BHs. Here we report on the detection of a possible X-ray QPO signal with a period of 3800 s at a confidence level >99.99% in the narrow-line Seyfert 1 galaxy (NLS1) 1H. 0707-495 in one data set in 0.2-10 keV taken with XMM-Newton. The statistical significance is higher than that of most previously reported QPOs in AGNs. The QPO is highly coherent (quality factor Q = nu/Delta n >= 15) with a high rms fractional variability (similar to 15%). A comprehensive analysis of the optical spectra of this AGN is also performed, yielding a central BH mass of 5.2. x 10(6) M-circle dot from the broad emission lines based on the scaling relation. The QPO follows the known frequency-BH mass relation closely, which spans from stellar-mass to supermassive BHs. The absence of QPOs in other observations of the object suggests that it is a transient phenomenon. We suggest that the (high-frequency) QPOs tend to occur in highly accreting BH systems, from BHXBs to supermassive BHs. Future precise estimation of the BH mass may be used to infer the BH spin from the QPO frequency. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000371788300003 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5406]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, 20A Datun Rd, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 3.Polar Res Inst China, 451 Jinqiao Rd, Shanghai 200136, Peoples R China 4.Chinese Acad Sci, Univ Sci & Technol China, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China 5.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan, Hai-Wu,Yuan, Weimin,Yao, Su,et al. DETECTION OF A POSSIBLE X-RAY QUASI-PERIODIC OSCILLATION IN THE ACTIVE GALACTIC NUCLEUS 1H 0707-495[J]. ASTROPHYSICAL JOURNAL LETTERS,2016,819(2). |
| APA | Pan, Hai-Wu.,Yuan, Weimin.,Yao, Su.,Zhou, Xin-Lin.,Liu, Bifang.,...&Zhang, Shuang-Nan.(2016).DETECTION OF A POSSIBLE X-RAY QUASI-PERIODIC OSCILLATION IN THE ACTIVE GALACTIC NUCLEUS 1H 0707-495.ASTROPHYSICAL JOURNAL LETTERS,819(2). |
| MLA | Pan, Hai-Wu,et al."DETECTION OF A POSSIBLE X-RAY QUASI-PERIODIC OSCILLATION IN THE ACTIVE GALACTIC NUCLEUS 1H 0707-495".ASTROPHYSICAL JOURNAL LETTERS 819.2(2016). |
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来源：国家天文台
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