Hot gas flows on a parsec scale in the low-luminosity active galactic nucleus NGC 3115
文献类型：期刊论文
| 作者 | Yao, Zhiyuan1; Gan, Zhaoming1,2 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2020-02-01 |
| 卷号 | 492期号:1页码:444-455 |
| 关键词 | accretion accretion discs black hole physics stars: winds, outflows galaxies: individual: NGC 3115 galaxies: nuclei |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stz3474 |
| 英文摘要 | NGC 3115 is known as the low-luminosity active galactic nucleus that hosts the nearest (z similar to 0.002) billion-solar-mass supermassive black hole (similar to 1.5 x 10(9) M-circle dot). Its Bondi radius r(B) (similar to 3.6 arcsec) can be readily resolved with Chandra, which provides an excellent opportunity to investigate the accretion flow on to a supermassive black hole. In this paper, we perform two-dimensional hydrodynamical numerical simulations, tailored for NGC 3115, on the mass flow across the Bondi radius. Our best fittings for the density and temperature agree well with the observations of the hot interstellar medium in the centre of NGC 3115. We find that the flow properties are determined solely by the local galaxy properties in the galaxy centre: (1) stellar winds (including supernova ejecta) supply the mass and energy sources for the accreting gas; (2) similar to in the one-dimensional calculations, a stagnation radius r(st) similar to 0.1 r(B) is also found in the two-dimensional simulations, which divides the mass flow into an inflow-outflow structure; (3) the radiatively inefficient accretion flow theory applies well inside the stagnation radius, where the gravity is dominated by the supermassive black hole and the gas is supported by rotation; (4) beyond the stagnation radius, the stellar gravity dominates the spherical-like fluid dynamics and causes the transition from a steep density profile outside to a flat density profile inside the Bondi radius. |
| WOS关键词 | RADIATIVELY INEFFICIENT ACCRETION ; ADVECTION-DOMINATED ACCRETION ; SUPERMASSIVE BLACK-HOLES ; SAGITTARIUS-A-ASTERISK ; STELLAR MASS-LOSS ; X-RAY ; LOW-DENSITY ; GALAXIES ; MODEL ; SIMULATIONS |
| 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[11650110427] ; Natural Science Foundation of China[11661161012] ; Key Research Program of Frontier Sciences of CAS[QYZDJSSW-SYS008] ; Natural Science Foundation of Shanghai[18ZR1447200] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000512329900035 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Key Research Program of Frontier Sciences of CAS ; Key Research Program of Frontier Sciences of CAS ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Key Research Program of Frontier Sciences of CAS ; Key Research Program of Frontier Sciences of CAS ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Key Research Program of Frontier Sciences of CAS ; Key Research Program of Frontier Sciences of CAS ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Key Research Program of Frontier Sciences of CAS ; Key Research Program of Frontier Sciences of CAS ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/54217]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Gan, Zhaoming |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 2.Columbia Univ, Dept Astron, 550 W,120th St, New York, NY 10027 USA |
| 推荐引用方式 GB/T 7714 | Yao, Zhiyuan,Gan, Zhaoming. Hot gas flows on a parsec scale in the low-luminosity active galactic nucleus NGC 3115[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,492(1):444-455. |
| APA | Yao, Zhiyuan,&Gan, Zhaoming.(2020).Hot gas flows on a parsec scale in the low-luminosity active galactic nucleus NGC 3115.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,492(1),444-455. |
| MLA | Yao, Zhiyuan,et al."Hot gas flows on a parsec scale in the low-luminosity active galactic nucleus NGC 3115".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 492.1(2020):444-455. |
入库方式： OAI收割
来源：国家天文台
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