NAOC Open IR
The awakening beast in the Seyfert 1 Galaxy KUG 1141+371-I
Jiang, Jiachen1,2; Cheng, Huaqing3; Gallo, Luigi C.4; Ho, Luis C.5,6; Buisson, Douglas J. K.7; Fabian, Andrew C.8; Harrison, Fiona A.9; Parker, Michael L.10; Reynolds, Christopher S.8; Steiner, James F.11; Tomsick, John A.12; Walton, Dominic J.8; Yuan, Weimin3
2021-02-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume501Issue:1Pages:916-932
AbstractKUG 1141+371 is a Seyfert 1 galaxy that shows a simultaneous flux increase in the optical and UV bands in the past decade. For instance, the latest Swift observation in 2019 shows that the UVW2 flux of the active galactic nucleus in KUG 1141+371 has increased by over one order of magnitude since 2009. Meanwhile, the soft X-ray flux of KUG 1141+371 also shows a steady increase by one order of magnitude since 2007. The significant multiwavelength luminosity change is likely due to a boost of mass accretion rate from approximately 0.6 per cent of the Eddington limit to 3.2 per cent, assuming a black hole mass of 10(8) M-circle dot. In this work, we conduct detailed multi-epoch X-ray spectral analysis focusing on the variability of the X-ray continuum emission and the puzzling soft excess emission. In addition, our SED models also suggest a simultaneous increase of disc temperature and a decreasing inner disc radius along with the increasing accretion rate. Finally, we discuss possible connection between KUG 1141+371 and black hole transients in outburst.
Keywordaccretion, accretion discs black hole physics galaxies: Seyfert X-rays: galaxies
Funding OrganizationTsinghua Astrophysics Outstanding Fellowship ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Shuimu Scholar Program ; Tsinghua Shuimu Scholar Program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Royal Society ; Royal Society ; ERC Advanced Grant ; ERC Advanced Grant ; UK Science and Technology Facilities Council ; UK Science and Technology Facilities Council ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; National Science Foundation of China ; National Science Foundation of China ; European Space Agency Research Fellowships ; European Space Agency Research Fellowships ; STFC Ernest Rutherford Fellowship ; STFC Ernest Rutherford Fellowship ; ESA ; ESA ; NASA ; NASA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Shuimu Scholar Program ; Tsinghua Shuimu Scholar Program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Royal Society ; Royal Society ; ERC Advanced Grant ; ERC Advanced Grant ; UK Science and Technology Facilities Council ; UK Science and Technology Facilities Council ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; National Science Foundation of China ; National Science Foundation of China ; European Space Agency Research Fellowships ; European Space Agency Research Fellowships ; STFC Ernest Rutherford Fellowship ; STFC Ernest Rutherford Fellowship ; ESA ; ESA ; NASA ; NASA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Shuimu Scholar Program ; Tsinghua Shuimu Scholar Program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Royal Society ; Royal Society ; ERC Advanced Grant ; ERC Advanced Grant ; UK Science and Technology Facilities Council ; UK Science and Technology Facilities Council ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; National Science Foundation of China ; National Science Foundation of China ; European Space Agency Research Fellowships ; European Space Agency Research Fellowships ; STFC Ernest Rutherford Fellowship ; STFC Ernest Rutherford Fellowship ; ESA ; ESA ; NASA ; NASA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Shuimu Scholar Program ; Tsinghua Shuimu Scholar Program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Royal Society ; Royal Society ; ERC Advanced Grant ; ERC Advanced Grant ; UK Science and Technology Facilities Council ; UK Science and Technology Facilities Council ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; National Science Foundation of China ; National Science Foundation of China ; European Space Agency Research Fellowships ; European Space Agency Research Fellowships ; STFC Ernest Rutherford Fellowship ; STFC Ernest Rutherford Fellowship ; ESA ; ESA ; NASA ; NASA ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.1093/mnras/staa3737
WOS KeywordDENSITY REFLECTION SPECTROSCOPY ; ACTIVE GALACTIC NUCLEI ; X-RAY REFLECTION ; BLACK-HOLE ; TIDAL DISRUPTION ; ACCRETION DISC ; STATE TRANSITION ; VARIABILITY ; EMISSION ; AGN
Language英语
Funding ProjectTsinghua Astrophysics Outstanding Fellowship ; Tsinghua Shuimu Scholar Program ; National Key Research and Development Program of China[2016YFA0400702] ; Royal Society ; ERC Advanced Grant[340442] ; UK Science and Technology Facilities Council[ST/R000867/1] ; European Research Council under the European Union's Horizon 2020 research and innovation programme[834203] ; National Science Foundation of China[11721303] ; National Science Foundation of China[11991052] ; European Space Agency Research Fellowships ; STFC Ernest Rutherford Fellowship ; ESA ; NASA ; National Natural Science Foundation of China[11803047]
Funding OrganizationTsinghua Astrophysics Outstanding Fellowship ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Shuimu Scholar Program ; Tsinghua Shuimu Scholar Program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Royal Society ; Royal Society ; ERC Advanced Grant ; ERC Advanced Grant ; UK Science and Technology Facilities Council ; UK Science and Technology Facilities Council ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; National Science Foundation of China ; National Science Foundation of China ; European Space Agency Research Fellowships ; European Space Agency Research Fellowships ; STFC Ernest Rutherford Fellowship ; STFC Ernest Rutherford Fellowship ; ESA ; ESA ; NASA ; NASA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Shuimu Scholar Program ; Tsinghua Shuimu Scholar Program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Royal Society ; Royal Society ; ERC Advanced Grant ; ERC Advanced Grant ; UK Science and Technology Facilities Council ; UK Science and Technology Facilities Council ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; National Science Foundation of China ; National Science Foundation of China ; European Space Agency Research Fellowships ; European Space Agency Research Fellowships ; STFC Ernest Rutherford Fellowship ; STFC Ernest Rutherford Fellowship ; ESA ; ESA ; NASA ; NASA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Shuimu Scholar Program ; Tsinghua Shuimu Scholar Program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Royal Society ; Royal Society ; ERC Advanced Grant ; ERC Advanced Grant ; UK Science and Technology Facilities Council ; UK Science and Technology Facilities Council ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; National Science Foundation of China ; National Science Foundation of China ; European Space Agency Research Fellowships ; European Space Agency Research Fellowships ; STFC Ernest Rutherford Fellowship ; STFC Ernest Rutherford Fellowship ; ESA ; ESA ; NASA ; NASA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Astrophysics Outstanding Fellowship ; Tsinghua Shuimu Scholar Program ; Tsinghua Shuimu Scholar Program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Royal Society ; Royal Society ; ERC Advanced Grant ; ERC Advanced Grant ; UK Science and Technology Facilities Council ; UK Science and Technology Facilities Council ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; European Research Council under the European Union's Horizon 2020 research and innovation programme ; National Science Foundation of China ; National Science Foundation of China ; European Space Agency Research Fellowships ; European Space Agency Research Fellowships ; STFC Ernest Rutherford Fellowship ; STFC Ernest Rutherford Fellowship ; ESA ; ESA ; NASA ; NASA ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000608474800070
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/79798
Collection中国科学院国家天文台
Corresponding AuthorJiang, Jiachen
Affiliation1.Tsinghua Univ, Dept Astron, Shuangqing Rd 30, Beijing 100034, Peoples R China
2.Tsinghua Univ, Tsinghua Ctr Astrophys, Shuangqing Rd 30, Beijing 100034, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, 20A Datun Rd, Beijing 100101, Peoples R China
4.St Marys Univ, Dept Astron & Phys, 923 Robie St, Halifax, NS B3H 3C3, Canada
5.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
6.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China
7.Univ Southampton, Dept Astron, Southampton SO17 1BJ, Hants, England
8.Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England
9.CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA
10.European Space Agcy, European Space Astron Ctr, E-28691 Madrid, Spain
11.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
12.Univ Calif Berkeley, Space Sci Lab, 7 Gauss Way, Berkeley, CA 94720 USA
Recommended Citation
GB/T 7714
Jiang, Jiachen,Cheng, Huaqing,Gallo, Luigi C.,et al. The awakening beast in the Seyfert 1 Galaxy KUG 1141+371-I[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,501(1):916-932.
APA Jiang, Jiachen.,Cheng, Huaqing.,Gallo, Luigi C..,Ho, Luis C..,Buisson, Douglas J. K..,...&Yuan, Weimin.(2021).The awakening beast in the Seyfert 1 Galaxy KUG 1141+371-I.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,501(1),916-932.
MLA Jiang, Jiachen,et al."The awakening beast in the Seyfert 1 Galaxy KUG 1141+371-I".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 501.1(2021):916-932.
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