NAOC Open IR
Optical and ultraviolet monitoring of the black hole X-ray binary MAXI J1820+070/ASASSN-18ey for 18 months
Sai, Hanna1,2; Wang, Xiaofeng1,2,3; Wu, Jianfeng4; Lin, Jie1,2; Feng, Hua5,6; Zhang, Tianmeng7,8; Li, Wenxiong1,2; Zhang, Jujia9,10,11; Mo, Jun1,2; Sun, Tianrui12,13,14; Ehgamberdiev, Shuhrat A.15; Mirzaqulov, Davron15; Rui, Liming1,2; Lin, Weili1,2; Zhao, Xulin16; Lin, Han1,2; Zhang, Jicheng1,2; Zhang, Xinghan1,2; Zhao, Yong7,17; Li, Xue1,2; Xiang, Danfeng1,2; Wang, Lingzhi18,19; Wu, Chengyuan1,2
2021-07-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume504Issue:3Pages:4226-4241
AbstractMAXI J1820+070 is a low-mass black hole X-ray binary system with high luminosity in both optical and X-ray bands during its outburst periods. We present extensive photometry in the X-ray, ultraviolet, and optical bands, as well as densely cadenced optical spectra, covering the phase from the beginning of the optical outburst to similar to 550 days. During the rebrightening process, the optical emission precedes the X-ray by 20.80 +/- 2.85 days. The spectra are characterized by blue continua and emission features of Balmer series, He I, and He II lines and a broad Bowen blend. The pseudo equivalent widths (pEWs) of emission lines are found to show anticorrelations with the X-ray flux measured at comparable phases, due to increased suppression by the optical continuum. At around the X-ray peak, the full widths at half-maximum (FWHMs) of H beta and He II lambda 4686 tend to stabilize at 19.4 and 21.8 angstrom, corresponding to the line-forming regions at radii of 1.7 and 1.3 R-circle dot within the disc. We further analysed the absolute fluxes of the lines and found that the fluxes of H beta and He II lambda 4686 show positive correlations with the X-ray flux, favouring the suggestion that the irradiation model is responsible for the optical emission. However, the fact that X-ray emission experiences a dramatic flux drop at t similar to 200 days after the outburst, while the optical flux only shows a little variation, suggests that additional energy such as viscous energy may contribute to the optical radiation, in addition to X-ray irradiation.
Keywordaccretion, accretion discs stars: black holes X-rays: binaries
Funding OrganizationOpen Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Scholar Program of Beijing Academy of Science and Technology ; Scholar Program of Beijing Academy of Science and Technology ; President Fund of Xiamen University ; President Fund of Xiamen University ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Scholar Program of Beijing Academy of Science and Technology ; Scholar Program of Beijing Academy of Science and Technology ; President Fund of Xiamen University ; President Fund of Xiamen University ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Scholar Program of Beijing Academy of Science and Technology ; Scholar Program of Beijing Academy of Science and Technology ; President Fund of Xiamen University ; President Fund of Xiamen University ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Scholar Program of Beijing Academy of Science and Technology ; Scholar Program of Beijing Academy of Science and Technology ; President Fund of Xiamen University ; President Fund of Xiamen University ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.1093/mnras/stab1162
WOS KeywordDISC INSTABILITY MODEL ; DWARF-NOVAE ; MASS ; EMISSION ; OUTBURST ; SPECTROSCOPY ; TRANSIENTS ; SOFT
Language英语
Funding ProjectOpen Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC)[12033003] ; National Natural Science Foundation of China (NSFC)[11761141001] ; National Natural Science Foundation of China (NSFC)[11633002] ; National Natural Science Foundation of China (NSFC)[12003013] ; National Program on Key Research and Development Project[2016YFA0400803] ; Scholar Program of Beijing Academy of Science and Technology[BS2020002] ; President Fund of Xiamen University[20720190051] ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; National Natural Science Foundation of China[U1938105]
Funding OrganizationOpen Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Scholar Program of Beijing Academy of Science and Technology ; Scholar Program of Beijing Academy of Science and Technology ; President Fund of Xiamen University ; President Fund of Xiamen University ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Scholar Program of Beijing Academy of Science and Technology ; Scholar Program of Beijing Academy of Science and Technology ; President Fund of Xiamen University ; President Fund of Xiamen University ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Scholar Program of Beijing Academy of Science and Technology ; Scholar Program of Beijing Academy of Science and Technology ; President Fund of Xiamen University ; President Fund of Xiamen University ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Scholar Program of Beijing Academy of Science and Technology ; Scholar Program of Beijing Academy of Science and Technology ; President Fund of Xiamen University ; President Fund of Xiamen University ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000656139300074
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/77313
Collection中国科学院国家天文台
Corresponding AuthorWang, Xiaofeng; Sun, Tianrui
Affiliation1.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China
2.Tsinghua Univ, Tsinghua Ctr Astrophys THCA, Beijing 100084, Peoples R China
3.Beijing Acad Sci & Technol, Beijing Planetarium, Beijing 100044, Peoples R China
4.Xiamen Univ, Dept Astron, Haiyun Campus, Xiamen 361005, Fujian, Peoples R China
5.Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China
6.Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
7.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100101, Peoples R China
8.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 101408, Peoples R China
9.Chinese Acad Sci, Yunnan Observ YNAO, Kunming 650216, Yunnan, Peoples R China
10.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Yunnan, Peoples R China
11.Chinese Acad Sci, Ctr Astron Megasci, 20A Datun Rd, Beijing 100012, Peoples R China
12.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
13.Chinese Ctr Antarctic Astron, Nanjing 210008, Peoples R China
14.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China
15.Uzbek Acad Sci, Ulugh Beg Astron Inst, Tashkent 100052, Uzbekistan
16.Tianjin Univ Technol, Sch Sci, Tianjin 300384, Peoples R China
17.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
18.Chinese Acad Sci, Natl Astron Observ China, Beijing 100012, Peoples R China
19.Chinese Acad Sci, Natl Astron Observ, CAS, South Amer Ctr Astron, Beijing 100101, Peoples R China
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GB/T 7714
Sai, Hanna,Wang, Xiaofeng,Wu, Jianfeng,et al. Optical and ultraviolet monitoring of the black hole X-ray binary MAXI J1820+070/ASASSN-18ey for 18 months[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,504(3):4226-4241.
APA Sai, Hanna.,Wang, Xiaofeng.,Wu, Jianfeng.,Lin, Jie.,Feng, Hua.,...&Wu, Chengyuan.(2021).Optical and ultraviolet monitoring of the black hole X-ray binary MAXI J1820+070/ASASSN-18ey for 18 months.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,504(3),4226-4241.
MLA Sai, Hanna,et al."Optical and ultraviolet monitoring of the black hole X-ray binary MAXI J1820+070/ASASSN-18ey for 18 months".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 504.3(2021):4226-4241.
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