ACTIVE GALACTIC NUCLEUS FEEDBACK IN AN ISOLATED ELLIPTICAL GALAXY: THE EFFECT OF STRONG RADIATIVE FEEDBACK IN THE KINETIC MODE

	ACTIVE GALACTIC NUCLEUS FEEDBACK IN AN ISOLATED ELLIPTICAL GALAXY: THE EFFECT OF STRONG RADIATIVE FEEDBACK IN THE KINETIC MODE
	Gan, Zhaoming 1; Yuan, Feng1 ; Ostriker, Jeremiah P.2,3; Ciotti, Luca 4; Novak, Gregory S.5
刊名	ASTROPHYSICAL JOURNAL
	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
内容类型	期刊论文
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.