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Unveiling slim accretion disc in AGN through X-ray and infrared observations
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; Castello-Mor, Nuria(Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel)
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2017-05-01
卷号467期号:1页码:1209-1221
DOI10.1093/mnras/stx153
产权排序第6完成单位
收录类别SCI
关键词Accretion Accretion Discs Galaxies: Active
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.
项目资助者Israel Science Foundation (ISF)(83/13) ; National Science Foundation Committee (NSFC) ; ISSI ; Chinese Academy of Science(XDB09030102) ; National Natural Science Foundation of China(11473002) ; Ministry of Science and Technology of China(2016YFA0400702) ; National Science Foundations of China(11373024) ; ISF-NSFC(83/13)
语种英语
学科领域天文学
文章类型Article
ISSN0035-8711
URL查看原文
WOS记录号WOS:000398418900086
WOS研究方向Astronomy & Astrophysics
WOS类目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
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/10029
专题丽江天文观测站(南方基地)
通讯作者Castello-Mor, Nuria(Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel)
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
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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.,...&Castello-Mor, Nuria.(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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