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A Gamma-Ray Periodic Modulation in Globular Cluster 47 Tucanae
Zhang, Peng-Fei1,2; Zhou, Jia-Neng3; Yan, Da-Hai4,5,6; Yan, Jing-Zhi2,7; Fan, Yi-Zhong2,7; Fang, Jun1; Zhang, Li1
2020-12-01
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume904Issue:2Pages:5
AbstractThe globular cluster 47 Tucanae was first detected in gamma rays by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope, and the gamma-ray emission has been widely attributed to the millisecond pulsars. In this work, we analyze the Fermi-LAT pass 8 data ranging from 2008 August to 2017 May and report the detection of a modulation with a period of 18.416 0.008 hr at a significance level of similar to 4.8 sigma. This is the first time detecting a significant modulation with a period much longer than that of millisecond pulsars in gamma rays from globular clusters. The periodic modulation signal appears in the Swift Burst Alert Telescope (BAT) data as well. The phase-folded Chandra X-ray light curve of a point source may have provided an additional clue.
KeywordGlobular star clusters Gamma-rays Binary pulsars Periodic orbit
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; Candidate Talents Training Fund of Yunnan Province ; Candidate Talents Training Fund of Yunnan Province ; CAS Youth Innovation Promotion Association ; CAS Youth Innovation Promotion Association ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; Candidate Talents Training Fund of Yunnan Province ; Candidate Talents Training Fund of Yunnan Province ; CAS Youth Innovation Promotion Association ; CAS Youth Innovation Promotion Association ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; Candidate Talents Training Fund of Yunnan Province ; Candidate Talents Training Fund of Yunnan Province ; CAS Youth Innovation Promotion Association ; CAS Youth Innovation Promotion Association ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; Candidate Talents Training Fund of Yunnan Province ; Candidate Talents Training Fund of Yunnan Province ; CAS Youth Innovation Promotion Association ; CAS Youth Innovation Promotion Association
DOI10.3847/2041-8213/abc7bb
WOS KeywordLARGE-AREA TELESCOPE ; GLOBULAR-CLUSTER-47 TUCANAE ; EMISSION ; CATALOG ; PULSAR ; BINARIES ; BAT
Language英语
Funding ProjectNational Key R&D Program of China[2018YFA0404204] ; National Natural Science Foundation of China[11603059] ; National Natural Science Foundation of China[11661161010] ; National Natural Science Foundation of China[U1738124] ; National Natural Science Foundation of China[E085051002] ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University[2018FY001 (-003)] ; Candidate Talents Training Fund of Yunnan Province[2017HB003] ; CAS Youth Innovation Promotion Association
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; Candidate Talents Training Fund of Yunnan Province ; Candidate Talents Training Fund of Yunnan Province ; CAS Youth Innovation Promotion Association ; CAS Youth Innovation Promotion Association ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; Candidate Talents Training Fund of Yunnan Province ; Candidate Talents Training Fund of Yunnan Province ; CAS Youth Innovation Promotion Association ; CAS Youth Innovation Promotion Association ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; Candidate Talents Training Fund of Yunnan Province ; Candidate Talents Training Fund of Yunnan Province ; CAS Youth Innovation Promotion Association ; CAS Youth Innovation Promotion Association ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; joint foundation of Department of Science and Technology of Yunnan Province and Yunnan University ; Candidate Talents Training Fund of Yunnan Province ; Candidate Talents Training Fund of Yunnan Province ; CAS Youth Innovation Promotion Association ; CAS Youth Innovation Promotion Association
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000595249900001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/80623
Collection中国科学院国家天文台
Corresponding AuthorZhang, Peng-Fei
Affiliation1.Yunnan Univ, Sch Phys & Astron, Dept Astron, Key Lab Astroparticle Phys Yunnan Prov, Kunming 650091, Yunnan, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210034, Peoples R China
3.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
4.Chinese Acad Sci, Yunnan Observ, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan, Peoples R China
5.Chinese Acad Sci, Ctr Astron Megasci, 20A Datun Rd, Beijing 100012, Peoples R China
6.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan, Peoples R China
7.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Peng-Fei,Zhou, Jia-Neng,Yan, Da-Hai,et al. A Gamma-Ray Periodic Modulation in Globular Cluster 47 Tucanae[J]. ASTROPHYSICAL JOURNAL LETTERS,2020,904(2):5.
APA Zhang, Peng-Fei.,Zhou, Jia-Neng.,Yan, Da-Hai.,Yan, Jing-Zhi.,Fan, Yi-Zhong.,...&Zhang, Li.(2020).A Gamma-Ray Periodic Modulation in Globular Cluster 47 Tucanae.ASTROPHYSICAL JOURNAL LETTERS,904(2),5.
MLA Zhang, Peng-Fei,et al."A Gamma-Ray Periodic Modulation in Globular Cluster 47 Tucanae".ASTROPHYSICAL JOURNAL LETTERS 904.2(2020):5.
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