| A new approach for measuring power spectra and reconstructing time series in active galactic nuclei | |
Li YR(李彦荣) ; Wang JM(王建民); Li, YR; Wang, JM; Li, Yan-Rong; Wang, Jian-Min
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| 2018 | |
| Source Publication | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| ISSN | 0035-8711 |
| EISSN | 1365-2966 |
| Volume | 476Issue:1Pages:L55-L59 |
| Subtype | Article |
| Abstract | We provide a new approach to measure power spectra and reconstruct time series in active galactic nuclei (AGNs) based on the fact that the Fourier transform of AGN stochastic variations is a series of complex Gaussian random variables. The approach parametrizes a stochastic series in frequency domain and transforms it back to time domain to fit the observed data. The parameters and their uncertainties are derived in a Bayesian framework, which also allows us to compare the relative merits of different power spectral density models. The well-developed fast Fourier transform algorithm together with parallel computation enables an acceptable time complexity for the approach. |
| Keyword | methods: data analysis methods: statistical galaxies: active |
| DOI | 10.1093/mnrasl/sly028 |
| WOS Keyword | X-RAY VARIABILITY |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000452745800012 |
| ADS Bibcode | 2018MNRAS.476L..55L |
| AXRIV CODE | 1802 |
| inspireid | 1656900 |
| Citation statistics |
Cited Times:5 [INSPIRE]
Cited Times:10 [ADS]
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| Document Type | 期刊论文 |
| Identifier | http://ir.ihep.ac.cn/handle/311005/286908 |
| Collection | 粒子天体物理中心 |
| Corresponding Author | Li YR(李彦荣) |
| Affiliation | 中国科学院高能物理研究所 |
| First Author Affilication | Institute of High Energy |
| Corresponding Author Affilication | Institute of High Energy |
| Recommended Citation GB/T 7714 | Li YR,Wang JM,Li, YR,et al. A new approach for measuring power spectra and reconstructing time series in active galactic nuclei[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,476(1):L55-L59. |
| APA | 李彦荣,王建民,Li, YR,Wang, JM,Li, Yan-Rong,&Wang, Jian-Min.(2018).A new approach for measuring power spectra and reconstructing time series in active galactic nuclei.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,476(1),L55-L59. |
| MLA | 李彦荣,et al."A new approach for measuring power spectra and reconstructing time series in active galactic nuclei".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 476.1(2018):L55-L59. |
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