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SUPERMASSIVE BLACK HOLES WITH HIGH ACCRETION RATES IN ACTIVE GALACTIC NUCLEI. IV. H beta TIME LAGS AND IMPLICATIONS FOR SUPER-EDDINGTON ACCRETION
文献类型：期刊论文
| 作者 | Du, P1; Hu, C1; Lu, KX1,2 ; Huang, YK1; Cheng, C3; Qiu, J1; Li, YR1; Zhang YW(张杨威)4; Fan XL(范绪亮)4; Bai JM(白金明)4
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2015-06-10 |
| 卷号 | 806期号:1 |
| ISSN号 | 0004-637X |
| 关键词 | accretion, accretion disks black hole physics galaxies: active quasars: supermassive black holes |
| 通讯作者 | Wang, JM (reprint author), Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, 19B Yuquan Rd, Beijing 100049, Peoples R China. |
| 产权排序 | 第四完成单位 |
| 英文摘要 | We have completed two years of photometric and spectroscopic monitoring of a large number of active galactic nuclei (AGNs) with very high accretion rates. In this paper, we report on the result of the second phase of the campaign, during 2013-2014, and the measurements of five new H beta time lags out of eight monitored AGNs. All five objects were identified as super-Eddington accreting massive black holes (SEAMBHs). The highest measured accretion rates for the objects in this campaign are (M) over dot(center dot) greater than or similar to 200, (M) over dot(center dot) = M over dot(center dot)/L(Edd)c(-2), (M) over dot(center dot) is the mass accretion rates, L-Edd is the Eddington luminosity and c is the speed of light. We find that the H beta time lags in SEAMBHs are significantly shorter than those measured in sub-Eddington AGNs, and the deviations increase with increasing accretion rates. Thus, the relationship between broad-line region size (R-H beta) and optical luminosity at 5100 angstrom, R-H beta-L-5100, requires accretion rate as an additional parameter. We propose that much of the effect may be due to the strong anisotropy of the emitted slim-disk radiation. Scaling R-H beta by the gravitational radius of the black hole (BH), we define a new radius-mass parameter (Y) and show that it saturates at a critical accretion rate of (M) over dot(c) = 6 similar to 30, indicating a transition from thin to slim accretion disk and a saturated luminosity of the slim disks. The parameter Y is a very useful probe for understanding the various types of accretion onto massive BHs. We briefly comment on implications to the general population of super-Eddington AGNs in the universe and applications to cosmology. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | BROAD-LINE REGION ; SEYFERT 1 GALAXIES ; AGN MONITORING PROJECT ; DIGITAL SKY SURVEY ; SLIM-DISK MODEL ; RADIUS-LUMINOSITY RELATIONSHIP ; REVERBERATION MAPPING DATA ; OBSERVATIONAL APPEARANCE ; STANDARD CANDLES ; EMERGENT SPECTRA |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/0004-637X/806/1/22/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000356810300022 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5465]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 作者单位 | 1.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China 2.Astronomy Department, Beijing Normal University, Beijing 100875, China 3.National Astronomical Observatories of China, Chinese Academy of Sciences, 20A Datun Road, Beijing 100020, China 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 5.Physics Department, Nanjing Normal University, Nanjing 210097, China 6.Department of Astronomy, University of Science and Technology of China, Hefei 230026, China 7.Wise Observatory, School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel 8.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China 9.Department of Astronomy, School of Physics, Peking University, Beijing 100871, China |
| 推荐引用方式 GB/T 7714 | Du, P,Hu, C,Lu, KX,et al. SUPERMASSIVE BLACK HOLES WITH HIGH ACCRETION RATES IN ACTIVE GALACTIC NUCLEI. IV. H beta TIME LAGS AND IMPLICATIONS FOR SUPER-EDDINGTON ACCRETION[J]. ASTROPHYSICAL JOURNAL,2015,806(1). |
| APA | Du, P.,Hu, C.,Lu, KX.,Huang, YK.,Cheng, C.,...&Wang, JM.(2015).SUPERMASSIVE BLACK HOLES WITH HIGH ACCRETION RATES IN ACTIVE GALACTIC NUCLEI. IV. H beta TIME LAGS AND IMPLICATIONS FOR SUPER-EDDINGTON ACCRETION.ASTROPHYSICAL JOURNAL,806(1). |
| MLA | Du, P,et al."SUPERMASSIVE BLACK HOLES WITH HIGH ACCRETION RATES IN ACTIVE GALACTIC NUCLEI. IV. H beta TIME LAGS AND IMPLICATIONS FOR SUPER-EDDINGTON ACCRETION".ASTROPHYSICAL JOURNAL 806.1(2015). |
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来源：云南天文台
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