A correlation-delay analysis of AO 0235+164 and its spectral evolution
文献类型：期刊论文
| 作者 | Chen, YJ; Jiang, DR; Zhang, FJ |
| 刊名 | CHINESE ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2002 |
| 卷号 | 26期号:1页码:14-28 |
| 关键词 | BL Lac object (AO 0235+164) DCF correlation spectral evolution |
| 英文摘要 | In this paper, the method of discrete correlation function proposed by Edelson and Krolik is introduced in some details. This method is suitable for correlation analysis of flux density data in various wavebands that are distributed unevenly in time due to irregularity of the observations. We have tested the method in the two extreme cases of perfect and zero correlation. The testing results prove that the DCF method is feasible. With this method, we have made correlation analysis of the flux densities at four wavebands of the AO 0235 + 164. The results show that the variations of flux density at 5 GHz, 8 GHz, 14.5 GHz and the optical B band are apparently correlated, and that the variation comes earlier in the higher frequency band than in the lower. This may imply that either the radiations at these bands (from radio to optical) originate from the same mechanism, or that the radiations are correlated. In addition, we have also found the spectral index in the radio band to vary in time, mainly in the form of spectrum inversion. Various lines of evidence indicate that the radio outbursts of AO 0235 + 164 are associated with the forming of shock waves in relativistic jets, and the spectral analysis of multiple wavebands and the study of spectral evolution may be an effective way to reveal the underlying relationship. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | EXTRAGALACTIC RADIO-SOURCES ; MILLIMETER CONTINUUM MEASUREMENTS ; ACTIVE GALACTIC NUCLEI ; BL-LACERTAE OBJECTS ; LARGE-SAMPLE ; EMISSION ; BLAZARS ; JETS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000174388500003 |
| 公开日期 | 2010-11-08 |
| 源URL | [http://119.78.226.72//handle/331011/12359]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, YJ,Jiang, DR,Zhang, FJ. A correlation-delay analysis of AO 0235+164 and its spectral evolution[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2002,26(1):14-28. |
| APA | Chen, YJ,Jiang, DR,&Zhang, FJ.(2002).A correlation-delay analysis of AO 0235+164 and its spectral evolution.CHINESE ASTRONOMY AND ASTROPHYSICS,26(1),14-28. |
| MLA | Chen, YJ,et al."A correlation-delay analysis of AO 0235+164 and its spectral evolution".CHINESE ASTRONOMY AND ASTROPHYSICS 26.1(2002):14-28. |
入库方式： OAI收割
来源：上海天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。