Hot gas flows on a parsec scale in the low-luminosity active galactic nucleus NGC 3115

doi:10.1093/mnras/stz3474

CORC > 国家天文台 > 中国科学院国家天文台

	Hot gas flows on a parsec scale in the low-luminosity active galactic nucleus NGC 3115
	Yao, Zhiyuan 1; Gan, Zhaoming 1,2
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	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.
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
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000512329900035
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
内容类型	期刊论文
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.