Insight-HXMT study of the timing properties of Sco X-1 The Insight-HXMT Collaboration
文献类型：期刊论文
| 作者 | Jia, S. M.1,8; Bu, Q. C.2,8; Qu, J. L.1,8; Lu, F. J.8; Zhang, S. N.1,8; Huang, Y.1,8; Ma, X.8; Tao, L.8; Xiao, G. C.1,8; Zhang, W.1,8 |
| 刊名 | JOURNAL OF HIGH ENERGY ASTROPHYSICS
 |
| 出版日期 | 2020-03-01 |
| 卷号 | 25页码:1-9 |
| ISSN号 | 2214-4048 |
| 关键词 | X-rays Binaries - stars Individual Sco X-1 |
| DOI | 10.1016/j.jheap.2019.11.001 |
| 英文摘要 | We present a detailed timing study of the brightest persistent X-ray source Sco X-1 using the data collected by the Hard X-ray Modulation Telescope (Insight-HXMT) from July 2017 to August 2018. Acomplete Z-track hardness-intensity diagram (HID) is obtained. The normal branch oscillations (NBOs) at similar to 6 Hz in the lower part of the normal branch (NB) and the flare branch oscillations (FBOs) at similar to 16 Hz in the beginning part of the flaring branch (FB) are found in observations with the Low Energy Xray Telescope (LE) and the Medium Energy X-ray Telescope (ME) of Insight-HXMT, while the horizontal branch oscillations (HBOs) at similar to 40 Hz and the kilohertz quasi-periodic oscillations (kHz QPOs) at similar to 800 Hz are found simultaneously above 20 keV for the first time on the horizontal branch (HB) by the High Energy X-ray Telescope (HE) and ME. We find that for all types of the observed QPOs, the centroid frequencies are independent of energy, while the root mean square (rms) increases with energy; the centroid frequencies of both the HBOs and kHz QPOs increase along the Z-track from the top to the bottom of the HB; and the NBOs show soft phase lags increasing with energy. A continuous QPO transition from the FB to NB in similar to 200 s are also detected. Our results indicate that the non-thermal emission is the origin of all types of QPOs, the innermost region of the accretion disk is non-thermal in nature, and the corona is nonhomogeneous geometrically. (C) 2019 Elsevier B.V. All rights reserved. |
| WOS关键词 | QUASI-PERIODIC OSCILLATIONS ; NORMAL-BRANCH OSCILLATION ; SPECTRAL BEHAVIOR ; SCORPIUS X-1 ; ATOLL SOURCE ; PHASE-LAG ; VARIABILITY ; MODEL ; DEPENDENCE ; FREQUENCY |
| 资助项目 | China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project[2016YFA0400801] ; Bureau of International Cooperation, Chinese Academy of Sciences[GJHZ1864] ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences[XDA15310300] ; National Natural Science Foundation of China[11733009] ; National Natural Science Foundation of China[11673023] ; National Natural Science Foundation of China[U1838201] ; National Natural Science Foundation of China[U1838202] ; National Natural Science Foundation of China[U1838111] ; National Natural Science Foundation of China[U1838115] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000519994400001 |
| 资助机构 | China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Bureau of International Cooperation, Chinese Academy of Sciences ; Bureau of International Cooperation, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Bureau of International Cooperation, Chinese Academy of Sciences ; Bureau of International Cooperation, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Bureau of International Cooperation, Chinese Academy of Sciences ; Bureau of International Cooperation, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Bureau of International Cooperation, Chinese Academy of Sciences ; Bureau of International Cooperation, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/56237]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Jia, S. M. |
| 作者单位 | 1.Univ Chinese Acad Sci, Chinese Acad Sci, Beijing 100049, Peoples R China 2.Eberhard Karls Univ Tubingen, Kepler Ctr Astro & Particle Phys, Inst Astron & Astrophys, D-72076 Tubingen, Germany 3.Beijing Normal Univ, Dept Astron, Beijing 100088, Peoples R China 4.Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China 5.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China 6.Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China 7.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100012, Peoples R China 8.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 | Jia, S. M.,Bu, Q. C.,Qu, J. L.,et al. Insight-HXMT study of the timing properties of Sco X-1 The Insight-HXMT Collaboration[J]. JOURNAL OF HIGH ENERGY ASTROPHYSICS,2020,25:1-9. |
| APA | Jia, S. M..,Bu, Q. C..,Qu, J. L..,Lu, F. J..,Zhang, S. N..,...&Zhuang, R. L..(2020).Insight-HXMT study of the timing properties of Sco X-1 The Insight-HXMT Collaboration.JOURNAL OF HIGH ENERGY ASTROPHYSICS,25,1-9. |
| MLA | Jia, S. M.,et al."Insight-HXMT study of the timing properties of Sco X-1 The Insight-HXMT Collaboration".JOURNAL OF HIGH ENERGY ASTROPHYSICS 25(2020):1-9. |
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来源：国家天文台
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