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Large-scale Dynamics of Winds Originating from Black Hole Accretion Flows. I. Hydrodynamics
Cui, Can1,2; Yuan, Feng1,2; Li, Bo3
2020-02-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume890Issue:1Pages:13
AbstractWinds from black hole accretion flows are ubiquitous. Previous works mainly focus on the launching of wind on the accretion flow scale. It still remains unclear how far the winds can propagate outward and what their large-scale dynamics is. As the first paper of this series, we study the large-scale dynamics of thermal wind beyond accretion scales via analytical and numerical methods. Boundary conditions, which are crucial to our problem, are analyzed and presented based on small-scale simulations combined with observations of winds. Both black hole and galaxy potential are taken into account. For winds originating from hot accretion flows, we find that the wind can reach large scales. The radial profiles of velocity, density, and temperature can be approximated by v(r) approximate to v(r0), rho approximate to rho(0) (r/r(0))(-2) and T approximate to T-0 (r/r(0))(-2(gamma-1)), where v(r0), rho(0), and T-0 are the velocity, density, and temperature of winds at the boundary r(0) (equivalent to 10(3)r(g)), and gamma is the polytropic index. During the outward propagation, the enthalpy and rotational energy compensate for the increase of gravitational potential. For thin disks, we find that because the Bernoulli parameter is smaller, winds cannot propagate as far as the hot winds, but stop at a certain radius where the Bernoulli parameter is equal to the potential energy. Before the winds stop, the profiles of dynamical quantities can also be approximated by the above relations. In this case, the rotational energy alone compensates for the increase in potential energy.
Funding OrganizationNational 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 ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; 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 ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; 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 ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; 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 ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center
DOI10.3847/1538-4357/ab6e6e
WOS KeywordEARLY-TYPE GALAXIES ; ADVECTION-DOMINATED ACCRETION ; ACTIVE GALACTIC NUCLEI ; DRIVEN DISK WINDS ; ULTRAFAST OUTFLOWS ; GAS ; SIMULATIONS ; FEEDBACK ; KINEMATICS ; EVOLUTION
Language英语
Funding ProjectNational 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] ; Astronomical Big Data Joint Research Center
Funding OrganizationNational 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 ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; 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 ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; 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 ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; 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 ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000522096700012
PublisherIOP PUBLISHING LTD
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/55595
Collection中国科学院国家天文台
Corresponding AuthorCui, Can
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Shandong Univ, Inst Space Sci, Weihai 264209, Peoples R China
Recommended Citation
GB/T 7714
Cui, Can,Yuan, Feng,Li, Bo. Large-scale Dynamics of Winds Originating from Black Hole Accretion Flows. I. Hydrodynamics[J]. ASTROPHYSICAL JOURNAL,2020,890(1):13.
APA Cui, Can,Yuan, Feng,&Li, Bo.(2020).Large-scale Dynamics of Winds Originating from Black Hole Accretion Flows. I. Hydrodynamics.ASTROPHYSICAL JOURNAL,890(1),13.
MLA Cui, Can,et al."Large-scale Dynamics of Winds Originating from Black Hole Accretion Flows. I. Hydrodynamics".ASTROPHYSICAL JOURNAL 890.1(2020):13.
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