The Variabilities of the Soft and Hard X—ray Components of NGC 7314 and NGC 7582 and the Distribution of Absorbing Matter in Type Ⅱ AGNs
文献类型：期刊论文
| 作者 | Zou Xianghua1; Xue Shijian2 |
| 刊名 | 中国天文和天体物理学报：英文版
 |
| 出版日期 | 2002 |
| 卷号 | 2.0期号:004页码:352 |
| 关键词 | 银河系 X射线 AGNs 吸收线 |
| ISSN号 | 1009-9271 |
| 英文摘要 | ASCA observations of the two Type Ⅱ AGNs,NGC7314 and NGC 7582,show clear variations in the broad X-ray band(0.4-10keV)on short timescales-10^4s.Spectral analysis indicates that they bot have an absorbed hard X-ray component and an unabsorbed soft“excess” component.To clarify the origin of the latter,we made a cross-correlation analysis of the two components.The results show that,for NGC7314,the soft X-ray variability is proportional to that of the hard X-ray component.This indicates that the active nucleus of NGC 7314 must be partially covered and so the soft emission is a “leaking” of the variable hard component.For NGC 7582,there is no detectable variability in the soft component, although there is a definite one in the hard component.This indicates that the variable nucleus of NGC 7582 must be fully blocked by absorbing matter,and the soft emission is most likely the scattered component predicted by the AGN unified model. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/63386]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.北京大学 2.中国科学院国家天文台 |
| 推荐引用方式 GB/T 7714 | Zou Xianghua,Xue Shijian. The Variabilities of the Soft and Hard X—ray Components of NGC 7314 and NGC 7582 and the Distribution of Absorbing Matter in Type Ⅱ AGNs[J]. 中国天文和天体物理学报：英文版,2002,2.0(004):352. |
| APA | Zou Xianghua,&Xue Shijian.(2002).The Variabilities of the Soft and Hard X—ray Components of NGC 7314 and NGC 7582 and the Distribution of Absorbing Matter in Type Ⅱ AGNs.中国天文和天体物理学报：英文版,2.0(004),352. |
| MLA | Zou Xianghua,et al."The Variabilities of the Soft and Hard X—ray Components of NGC 7314 and NGC 7582 and the Distribution of Absorbing Matter in Type Ⅱ AGNs".中国天文和天体物理学报：英文版 2.0.004(2002):352. |
入库方式： OAI收割
来源：国家天文台
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