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Hard X-ray lags of Cygnus X-1 on short timescales | |
Jin, J; Lu Y(卢宇)![]() ![]() ![]() | |
2010 | |
发表期刊 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
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卷号 | 53期号:1页码:#REF! |
通讯作者 | Jin, J (reprint author), Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China. |
摘要 | Calculating the time lags over different timescales using the cross-correlation technique may lead to a biased estimate of small timescales. Given a timescale for lightcurve binning, we propose to subtract the local average instead of the global average during the cross-correlation, in order to filter variations on timescales larger than the bin size. The new method allows us to make an unbiased estimate of the time lags using RXTE/PCA data on timescales as small as similar to 5 ms, where the Fourier technique becomes invalid. We calculate the time lag spectra of Cygnus X-1 at different spectral states with the new method, and find that the source appears to have similar X-ray lags on small timescales independent of its spectral states. |
文章类型 | Article |
关键词 | spectral lags Cygnus X-1 data analysis |
学科领域 | Physics |
DOI | 10.1007/s11433-010-0002-8 |
收录类别 | SCI |
WOS类目 | Physics, Multidisciplinary |
WOS记录号 | WOS:000280291800035 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ihep.ac.cn/handle/311005/226512 |
专题 | 院士 粒子天体物理中心 |
推荐引用方式 GB/T 7714 | Jin, J,Lu Y,Qu JL,et al. Hard X-ray lags of Cygnus X-1 on short timescales[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2010,53(1):#REF!. |
APA | Jin, J.,卢宇.,屈进禄.,李惕碚.,Lu, Y.,...&Li, TP.(2010).Hard X-ray lags of Cygnus X-1 on short timescales.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,53(1),#REF!. |
MLA | Jin, J,et al."Hard X-ray lags of Cygnus X-1 on short timescales".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 53.1(2010):#REF!. |
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文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
1666.pdf(264KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 |
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