ACTIVE GALACTIC NUCLEUS FEEDBACK IN AN ISOLATED ELLIPTICAL GALAXY: THE EFFECT OF STRONG RADIATIVE FEEDBACK IN THE KINETIC MODE
文献类型：期刊论文
| 作者 | Gan, Zhaoming1; Yuan, Feng1 ; Ostriker, Jeremiah P.2,3; Ciotti, Luca4; Novak, Gregory S.5
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2014-07-10 |
| 卷号 | 789期号:2页码:150 |
| 关键词 | accretion black hole physics galaxies: active galaxies: elliptical and lenticular galaxies: evolution galaxies: nuclei accretion disks cD |
| 通讯作者 | 甘朝明 |
| 英文摘要 | Based on two-dimensional high-resolution hydrodynamic numerical simulation, we study the mechanical and radiative feedback effects from the central active galactic nucleus (AGN) on the cosmological evolution of an isolated elliptical galaxy. The inner boundary of the simulation domain is carefully chosen so that the fiducial Bondi radius is resolved and the accretion rate of the black hole is determined self-consistently. It is well known that when the accretion rates are high and low, the central AGNs will be in cold and hot accretion modes, which correspond to the radiative and kinetic feedback modes, respectively. The emitted spectrum from the hot accretion flows is harder than that from the cold accretion flows, which could result in a higher Compton temperature accompanied by a more efficient radiative heating, according to previous theoretical works. Such a difference of the Compton temperature between the two feedback modes, the focus of this study, has been neglected in previous works. Significant differences in the kinetic feedback mode are found as a result of the stronger Compton heating. More importantly, if we constrain models to correctly predict black hole growth and AGN duty cycle after cosmological evolution, we find that the favored model parameters are constrained: mechanical feedback efficiency diminishes with decreasing luminosity (the maximum efficiency being similar or equal to 10(-3.5)), and X-ray Compton temperature increases with decreasing luminosity, although models with fixed mechanical efficiency and Compton temperature can be found that are satisfactory as well. We conclude that radiative feedback in the kinetic mode is much more important than previously thought. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ADVECTION-DOMINATED ACCRETION ; CENTRAL BLACK-HOLES ; SPECTRAL ENERGY-DISTRIBUTIONS ; MECHANICAL AGN FEEDBACK ; COOLING FLOWS ; HOST GALAXIES ; OBSERVATIONAL EVIDENCE ; VELOCITY DISPERSION ; NEARBY GALAXIES ; MASS OUTFLOWS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000338674900059 |
| 公开日期 | 2015-02-14 |
| 源URL | [http://119.78.226.72//handle/331011/15866]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 2.Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA 3.Columbia Univ, Dept Astron, New York, NY 10027 USA 4.Univ Bologna, Dept Phys & Astron, I-40127 Bologna, Italy 5.CNRS, LERMA, Observ Paris, F-75014 Paris, France |
| 推荐引用方式 GB/T 7714 | Gan, Zhaoming,Yuan, Feng,Ostriker, Jeremiah P.,et al. ACTIVE GALACTIC NUCLEUS FEEDBACK IN AN ISOLATED ELLIPTICAL GALAXY: THE EFFECT OF STRONG RADIATIVE FEEDBACK IN THE KINETIC MODE[J]. ASTROPHYSICAL JOURNAL,2014,789(2):150. |
| APA | Gan, Zhaoming,Yuan, Feng,Ostriker, Jeremiah P.,Ciotti, Luca,&Novak, Gregory S..(2014).ACTIVE GALACTIC NUCLEUS FEEDBACK IN AN ISOLATED ELLIPTICAL GALAXY: THE EFFECT OF STRONG RADIATIVE FEEDBACK IN THE KINETIC MODE.ASTROPHYSICAL JOURNAL,789(2),150. |
| MLA | Gan, Zhaoming,et al."ACTIVE GALACTIC NUCLEUS FEEDBACK IN AN ISOLATED ELLIPTICAL GALAXY: THE EFFECT OF STRONG RADIATIVE FEEDBACK IN THE KINETIC MODE".ASTROPHYSICAL JOURNAL 789.2(2014):150. |
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来源：上海天文台
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