Low-frequency coherence break in the soft X-ray state of GRS 1915+105
文献类型：期刊论文
| 作者 | Ji, JF; Zhang SN(张双南) ; Qu JL(屈进禄); Li TB(李惕碚); Zhang, SN; Qu, JL; Li, TP
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| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2003 |
| 卷号 | 584期号:1页码:L23-L26 |
| 关键词 | accretion, accretion disks stars : individual (GRS 1915+105) X-rays : binaries |
| 通讯作者 | Tsing Hua Univ, Dept Engn Phys, Beijing 100084, Peoples R China ; Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China ; Tsing Hua Univ, Ctr Astrophys, Beijing 100084, Peoples R China ; Univ Alabama, Dept Phys, Huntsville, AL 35899 USA ; NASA, George C Marshall Space Flight Ctr, Space Sci Lab, Huntsville, AL 35812 USA ; Chinese Acad Sci, Inst High Energy Phys, Lab Particle Astrophys, Beijing 100039, Peoples R China |
| 英文摘要 | We present results from the analysis of X-ray power density spectra and coherence when GRS 1915+105 is in soft states. We use three data sets that belong to mu, phi, and delta classes as found in the work of Belloni et al. We find that the power density spectra appear to be complex, with several features between 0.01 and 10 Hz. The coherence deviates from unity above a characteristic frequency. We discuss our results from different models. The corona size in the sphere-disk model implied by this break frequency is on the order of 10(4) GM/c(2), which is unphysical. Our results are more consistent with the prediction of the model of a planar corona sustained by magnetic flares, in which the characteristic frequency is associated with the longest timescale of an individual flare, which is about 8 s. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000180706100006 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/240263]  |
| 专题 | 高能物理研究所_院士 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Ji, JF,Zhang SN,Qu JL,et al. Low-frequency coherence break in the soft X-ray state of GRS 1915+105[J]. ASTROPHYSICAL JOURNAL,2003,584(1):L23-L26. |
| APA | Ji, JF.,张双南.,屈进禄.,李惕碚.,Zhang, SN.,...&Li, TP.(2003).Low-frequency coherence break in the soft X-ray state of GRS 1915+105.ASTROPHYSICAL JOURNAL,584(1),L23-L26. |
| MLA | Ji, JF,et al."Low-frequency coherence break in the soft X-ray state of GRS 1915+105".ASTROPHYSICAL JOURNAL 584.1(2003):L23-L26. |
入库方式： OAI收割
来源：高能物理研究所
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