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An energetic hot wind from the low-luminosity active galactic nucleus M81
Shi, Fangzheng1,2; Li, Zhiyuan1,2; Yuan, Feng3,4; Zhu, Bocheng3,4
2021-07-12
Source PublicationNATURE ASTRONOMY
ISSN2397-3366
Pages16
AbstractFor most of their lifetime, super-massive black holes (SMBHs) commonly found in galactic nuclei obtain mass from the ambient medium at a rate well below the Eddington limit(1), which is mediated by a radiatively inefficient, hot accretion flow(2). Both theory and numerical simulations predict that a strong wind must exist in such hot accretion flows(3-6). The wind is of special interest not only because it is an indispensable ingredient of accretion but also, perhaps more importantly, because it is believed to play a crucial role in the evolution of the host galaxy via the so-called kinetic mode active galactic nucleus feedback(7,8). Observational evidence for this wind, however, remains scarce and indirect(9-12). Here we report the detection of a hot outflow from the low-luminosity active galactic nucleus in M81, based on Chandra high-resolution X-ray spectroscopy. The outflow is evidenced by a pair of Fe XXVI Ly alpha lines redshifted and blue-shifted at a bulk line-of-sight velocity of +/- 2.8 x10(3) km s(-1) and a high line ratio of Fe XXVI Ly alpha to Fe XXV K alpha implying a plasma temperature of 1.3 x10(8) K. This high-velocity, hot plasma cannot be produced by stellar activity or the accretion inflow onto the SMBH. Our magnetohydrodynamical simulations show that, instead, it is naturally explained by a wind from the hot accretion flow, propagating out to greater than or similar to 10(6) times the gravitational radius of the SMBH. The kinetic energy and momentum of this wind can significantly affect the evolution of the circumnuclear environment and beyond.
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 the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; 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 the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; 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 the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; 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 the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences
DOI10.1038/s41550-021-01394-0
WOS KeywordADVECTION-DOMINATED ACCRETION ; STAR-FORMATION RATE ; K-ALPHA EMISSION ; LINES ; GAS ; JET ; SPECTROSCOPY ; GALAXIES ; RELEASE ; MODELS
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFA0402703] ; National Key Research and Development Program of China[2016YFA0400704] ; Natural Science Foundation of China[11873028] ; Natural Science Foundation of China[11633006] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences[QYZDJSSW-SYS008]
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 the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; 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 the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; 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 the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; 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 the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000672276300006
PublisherNATURE RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/76838
Collection中国科学院国家天文台
Corresponding AuthorLi, Zhiyuan; Yuan, Feng
Affiliation1.Nanjing Univ, Sch Astron & Space Sci, Nanjing, Peoples R China
2.Nanjing Univ, Key Lab Modern Astron & Astrophys, Nanjing, Peoples R China
3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China
4.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Shi, Fangzheng,Li, Zhiyuan,Yuan, Feng,et al. An energetic hot wind from the low-luminosity active galactic nucleus M81[J]. NATURE ASTRONOMY,2021:16.
APA Shi, Fangzheng,Li, Zhiyuan,Yuan, Feng,&Zhu, Bocheng.(2021).An energetic hot wind from the low-luminosity active galactic nucleus M81.NATURE ASTRONOMY,16.
MLA Shi, Fangzheng,et al."An energetic hot wind from the low-luminosity active galactic nucleus M81".NATURE ASTRONOMY (2021):16.
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