The variability and soft X-ray excess properties of narrow-line Seyfert 1 galaxies: The Swift view | |
Ding, Nan4; Gu, Qiusheng2,3; Tang, Yunyong4; Xiong DR(熊定荣)8; Guo, Xiaotong1; Xu, Xinpeng2,3; Geng, Xiongfei7; Ge, Xue6; Chen, Yongyun5 | |
刊名 | ASTRONOMY & ASTROPHYSICS |
2022-03-23 | |
卷号 | 659 |
关键词 | galaxies: active galaxies: Seyfert X-rays: galaxies |
ISSN号 | 0004-6361 |
DOI | 10.1051/0004-6361/202142650 |
产权排序 | 第4完成单位 |
文献子类 | Article |
英文摘要 | We present here a systematic study on the mechanism of the long/short timescale variability and the origin of soft X-ray excess for narrow-line Seyfert 1 galaxies (NLSy1s) based on the multi-epoch multi-band observations of the Swift telescope. The main results are as follows: (1) The ensemble structure functions of radio-quiet NLSy1s in the optical, ultraviolet, and X-ray bands all show a unique double 'S' structure. The structural feature reveals that the long and short timescale variability of radio-quiet NLSy1s could be generated by the accretion fluctuation propagation mechanism and the X-ray reprocessing mechanism, respectively, which together cause the complex random light variability. (2) Radio-quiet NLSy1s exhibit significant soft X-ray excess features in their X-ray spectra, but the relative strength of the soft X-ray excess (R) and the power-law spectral index (Gamma) do not show a significant positive correlation, unlike what is seen in broad-line Seyfert 1 galaxies (BLSy1s), suggesting that NLSy1s and BLSy1 have different soft X-ray excess mechanisms. After combining the correlation analysis results of model parameters for individual sources at different flux states with the findings in previous work based on XMM-Newton and Suzaku data, we propose that the origin of the soft X-ray excess of NLSy1s prefers the relativistically smeared reflection scenario. |
学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学 |
URL标识 | 查看原文 |
出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
资助项目 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[12103022] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11733002] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[12121003] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[12192220] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[12192222] ; Special Basic Cooperative Research Programs of Yunnan Provincial Undergraduate Universities' Association[202101BA070001-043] ; National Key Research and Development Program of China[2017YFA0402703] ; China Manned Space Project[CMS-CSST-2021-A05] ; Yunnan Talent Program for Young Top-Notch Talents[YNWR-QNBJ-2020-076] ; Yunnan Province Foundation[2019FB004] |
WOS关键词 | ACTIVE GALACTIC NUCLEI ; OPTICAL VARIABILITY ; LIGHT CURVES ; AGN ; ASTRONOMY ; SPECTRA |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | EDP SCIENCES S A |
WOS记录号 | WOS:000772118000006 |
资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[12103022, 11733002, 12121003, 12192220, 12192222] ; Special Basic Cooperative Research Programs of Yunnan Provincial Undergraduate Universities' Association[202101BA070001-043] ; National Key Research and Development Program of China[2017YFA0402703] ; China Manned Space Project[CMS-CSST-2021-A05] ; Yunnan Talent Program for Young Top-Notch Talents[YNWR-QNBJ-2020-076] ; Yunnan Province Foundation[2019FB004] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24983] |
专题 | 云南天文台_丽江天文观测站(南方基地) |
通讯作者 | Ding, Nan |
作者单位 | 1.Institute of Astronomy and Astrophysics, Anqing Normal University, Anqing 246133, PR China; 2.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210093, PR China; 3.School of Astronomy and Space Science, Nanjing University, Nanjing, Jiangsu 210093, PR China; 4.School of Physical Science and Technology, Kunming University, Kunming 650214, PR China; 5.College of Physics and Electronic Engineering, Qujing Normal University, Qujing 655011, PR China 6.School of Physics and Electronic Engineering, Jiangsu Second Normal University, Nanjing, Jiangsu 211200, PR China; 7.School of Electrical and Information Technology, Yunnan Minzu University, Kunming, 650091 Yunnan, PR China; 8.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, PR China; |
推荐引用方式 GB/T 7714 | Ding, Nan,Gu, Qiusheng,Tang, Yunyong,et al. The variability and soft X-ray excess properties of narrow-line Seyfert 1 galaxies: The Swift view[J]. ASTRONOMY & ASTROPHYSICS,2022,659. |
APA | Ding, Nan.,Gu, Qiusheng.,Tang, Yunyong.,Xiong DR.,Guo, Xiaotong.,...&Chen, Yongyun.(2022).The variability and soft X-ray excess properties of narrow-line Seyfert 1 galaxies: The Swift view.ASTRONOMY & ASTROPHYSICS,659. |
MLA | Ding, Nan,et al."The variability and soft X-ray excess properties of narrow-line Seyfert 1 galaxies: The Swift view".ASTRONOMY & ASTROPHYSICS 659(2022). |
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