Reconciling the quasar microlensing disc size problem with a wind model of active galactic nucleus
文献类型：期刊论文
| 作者 | Li, Ya-Ping1,4; Yuan, Feng1,3; Dai, Xinyu2 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2019-02-01 |
| 卷号 | 483期号:2页码:2275-2281 |
| 关键词 | accretion, accretion discs black hole physics gravitational lensing: micro ISM: jets and outflows quasars: general |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/sty3245 |
| 英文摘要 | Many analyses have concluded that the accretion disc sizes measured from the microlensing variability of quasars are larger than the expectations from the standard thin disc theory by a factor of similar to 4. We propose a simple model by invoking a strong wind from the disc to flatten its radial temperature profile, which can then reconcile the size discrepancy problem. This wind model has been successfully applied to several microlensed quasars with a wind strength s less than or similar to 1.3 by only considering the inward decreasing of the mass accretion rate [where s is defined through M (R) proportional to (R/R-0)(s)]. After further incorporating the angular momentum transferred by the wind, our model can resolve the disc size problem with an even lower wind parameter. The corrected disc sizes under the wind model are correlated with black hole masses with a slope in agreement with our modified thin disc model. |
| 资助项目 | National Key Research and Development Program of China[2016YFA0400704] ; Natural Science Foundation of China[11573051] ; Natural Science Foundation of China[11633006] ; Natural Science Foundation of China[11703064] ; Natural Science Foundation of China[11650110427] ; Natural Science Foundation of China[11661161012] ; Key Research Program of Frontier Sciences of CAS[QYZDJSSW-SYS008] ; Shanghai Sailing Program[17YF1422600] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000462258200065 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://119.78.226.72/handle/331011/31833]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Li, Ya-Ping |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China 2.Univ Oklahoma, Dept Phys & Astron, 440 W Brooks St, Norman, OK 73019 USA 3.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 4.Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA |
| 推荐引用方式 GB/T 7714 | Li, Ya-Ping,Yuan, Feng,Dai, Xinyu. Reconciling the quasar microlensing disc size problem with a wind model of active galactic nucleus[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,483(2):2275-2281. |
| APA | Li, Ya-Ping,Yuan, Feng,&Dai, Xinyu.(2019).Reconciling the quasar microlensing disc size problem with a wind model of active galactic nucleus.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,483(2),2275-2281. |
| MLA | Li, Ya-Ping,et al."Reconciling the quasar microlensing disc size problem with a wind model of active galactic nucleus".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 483.2(2019):2275-2281. |
入库方式： OAI收割
来源：上海天文台
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