Radiation mechanisms and physical properties of the gamma ray narrow-line Seyfert 1 galaxies
文献类型：期刊论文
| 作者 | Yang, Jianping1,2 ; Zhou, Bin1; Yang, JP (reprint author), Yunnan Agr Univ, Coll Basic Sci & Informat Engn, Kunming 650201, Peoples R China
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
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| 出版日期 | 2015-12 |
| 卷号 | 67期号:6 |
| ISSN号 | 0004-6264 |
| 关键词 | Galaxies: Active Galaxies: Seyfert Gamma Rays: Galaxies Radiation Mechanisms: General |
| DOI | 10.1093/pasj/psv101 |
| 文献子类 | Article |
| 英文摘要 | We investigate the physical properties and radiation mechanisms of 11 states of five narrow-line Seyfert 1 (NLS1) galaxies detected by the Large Area Telescope on board Fermi through modeling the quasi-simultaneous multi-band observations. We obtain the best-fitting model parameters and their uncertainties for each state with the chi(2)-minimization procedure and discuss their implications on the characteristics of jet. Similar to blazars, their spectral energy distributions (SEDs) have a two-humped structure and their non-thermal emission can be modelled with the single-zone synchrotron + inverse Compton (IC) model. For all states, the GeV gamma-rays may be contributed by the external Compton (EC) emission components. The observations of Fermi are mostly located at the declining stage of the EC humps. T-ext < 0.5 eV in all cases (T-ext is the characteristic temperature of external soft photons), suggesting that their radiation zones may be usually located outside of the broad line region (BLR) and the soft photons of Compton scattering mainly come from the dust torus. Compared with the bright Fermi blazars studied by Ghisellini et al. (2014, Nature, 515, 376), the Pjet (the power of the jets) of NLS1 galaxies detected by Fermi is similar to that of the flat spectrum radio quasars (FSRQs) but a little larger than that of the BL Lac objects (BL Lacs). However, a comparison of Pr (the powers of radiations) with the FSRQs and BL Lac objects shows that NLS1 galaxies' Pr has values comparable to BL Lac objects but lower than FSRQs in spite of having similar Pjet values and the same energy carrier (the cold protons) as the FSRQs. Observations indicate that gamma-NLS1 galaxies might have lower. (efficiency of gravitational energy release) values than GeV blazars. |
| 学科主题 | Astronomy & Astrophysics |
| URL标识 | 查看原文 |
| WOS关键词 | ACTIVE GALACTIC NUCLEI ; LARGE-AREA TELESCOPE ; BLACK-HOLE MASS ; SPECTRAL ENERGY-DISTRIBUTIONS ; BL-LAC OBJECTS ; RADIO-LOUD ; RELATIVISTIC JETS ; PMN J0948+0022 ; EMITTING ELECTRONS ; MARKARIAN 501 |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000366859800023 |
| 资助机构 | National Natural Science Foundation of China(11163006,11173054,11573060) ; Applied and Basic Research Program of Yunnan Province(2013FB036) |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9391]  |
| 专题 | 云南天文台_中国科学院天体结构与演化重点实验室 |
| 通讯作者 | Yang, JP (reprint author), Yunnan Agr Univ, Coll Basic Sci & Informat Engn, Kunming 650201, Peoples R China |
| 作者单位 | 1.College of Basic Science and Information Engineering of Yunnan Agricultural University, Kunming 650201, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, 650011, China |
| 推荐引用方式 GB/T 7714 | Yang, Jianping,Zhou, Bin,Yang, JP . Radiation mechanisms and physical properties of the gamma ray narrow-line Seyfert 1 galaxies[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2015,67(6). |
| APA | Yang, Jianping,Zhou, Bin,&Yang, JP .(2015).Radiation mechanisms and physical properties of the gamma ray narrow-line Seyfert 1 galaxies.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,67(6). |
| MLA | Yang, Jianping,et al."Radiation mechanisms and physical properties of the gamma ray narrow-line Seyfert 1 galaxies".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 67.6(2015). |
入库方式： OAI收割
来源：云南天文台
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