Unveiling slim accretion disc in AGN through X-ray and infrared observations
文献类型：期刊论文
| 作者 | Castello-Mor, Nuria1; Kaspi, Shai1,2; Netzer, Hagai1; Du, Pu3; Hu, Chen3; Ho, Luis C.4,5; Bai JM(白金明)6 ; Bian, Wei-Hao7; Yuan, Ye-Fei8; Wang, Jian-Min3,9
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2017-05-01 |
| 卷号 | 467期号:1页码:1209-1221 |
| ISSN号 | 0035-8711 |
| 关键词 | accretion accretion discs galaxies: active |
| 通讯作者 | Castello-Mor, Nuria(Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel) |
| 产权排序 | 第6完成单位 |
| 英文摘要 | In this work, which is a continuation of Castello-Mor et al., we present new X-ray and infrared (IR) data for a sample of active galactic nuclei (AGN) covering a wide range in Eddington ratio over a small luminosity range. In particular, we rigorously explore the dependence of the optical-to-X-ray spectral index alpha(OX) and the IR-to-optical spectral index on the dimensionless accretion rate, M = m/eta, where m = L-AGN/L-Edd and eta is the mass-to-radiation conversion efficiency, in low-and high-accretion rate sources. We find that the spectral energy distribution (SED) of the faster accreting sources is surprisingly similar to those from the comparison sample of sources with lower accretion rate. In particular: (i) The optical-to-UV AGN SED of slow and fast accreting AGN can be fitted with thin accretion disc (AD) models. (ii) The value of alpha(OX) is very similar in slow and fast accreting systems up to a dimensionless accretion rate M-c similar to 10. We only find a correlation between alpha(OX) and M for sources with M > Mc. In such cases, the faster accreting sources appear to have systematically larger aOX values. (iii) We also find that the torus in the faster accreting systems seems to be less efficient in reprocessing the primary AGN radiation having lower IR-to-optical spectral slopes. These findings, failing to recover the predicted differences between the SEDs of slim and thin ADs within the observed spectral window, suggest that additional physical processes or very special geometry act to reduce the extreme-UV radiation in fast accreting AGN. This may be related to photon trapping, strong winds and perhaps other yet unknown physical processes. |
| 学科主题 | 天文学 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; SPECTRAL ENERGY-DISTRIBUTION ; SUPER-EDDINGTON ACCRETION ; SUPERMASSIVE BLACK-HOLES ; SEYFERT 1 GALAXIES ; RADIUS-LUMINOSITY RELATIONSHIP ; BRIGHT SERENDIPITOUS SURVEY ; RATES ; EMISSION ; SAMPLE |
| 收录类别 | SCI |
| 原文出处 | https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stx153 |
| 语种 | 英语 |
| WOS记录号 | WOS:000398418900086 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/10029]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 作者单位 | 1.School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel 2.Wise Observatory, School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel 3.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China 4.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China 5.Department of Astronomy, School of Physics, Peking University, Beijing 100871, China 6.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 7.Physics Department, Nanjing Normal University, Nanjing 210097, China 8.Department of Astronomy, University of Science and Technology of China, Hefei 230026, China 9.National Astronomical Observatories of China, Chinese Academy of Sciences, 20A Datun Road, Beijing 100020, China |
| 推荐引用方式 GB/T 7714 | Castello-Mor, Nuria,Kaspi, Shai,Netzer, Hagai,et al. Unveiling slim accretion disc in AGN through X-ray and infrared observations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,467(1):1209-1221. |
| APA | Castello-Mor, Nuria.,Kaspi, Shai.,Netzer, Hagai.,Du, Pu.,Hu, Chen.,...&Wang, Jian-Min.(2017).Unveiling slim accretion disc in AGN through X-ray and infrared observations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,467(1),1209-1221. |
| MLA | Castello-Mor, Nuria,et al."Unveiling slim accretion disc in AGN through X-ray and infrared observations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 467.1(2017):1209-1221. |
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来源：云南天文台
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