NAOC Open IR
Insight-HXMT Firm Detection of the Highest-energy Fundamental Cyclotron Resonance Scattering Feature in the Spectrum of GRO J1008-57
Ge,M. Y.1; Ji,L.2; Zhang,S. N.1,3; Santangelo,A.2; Liu,C. Z.1; Doroshenko,V.2; Staubert,R.2; Qu,J. L.1; Zhang,S.1; Lu,F. J.1; Song,L. M.1,3; Li,T. P.1,3,4; Tao,L.1; Xu,Y. P.1; Cao,X. L.1; Chen,Y.1; Bu,Q. C.1; Cai,C.1; Chang,Z.1; Chen,G.1; Chen,L.5; Chen,T. X.1; Chen,Y. B.4; Chen,Y. P.1; Cui,W.4; Cui,W. W.1; Deng,J. K.6; Dong,Y. W.1; Du,Y. Y.1; Fu,M. X.4; Gao,G. H.1,3; Gao,H.1,3; Gao,M.1; Gu,Y. D.1; Guan,J.1; Guo,C. C.1,3; Han,D. W.1; Huang,Y.1; Huo,J.1; Jia,S. M.1; Jiang,L. H.1; Jiang,W. C.1; Jin,J.1; Jin,Y. J.7; Kong,L. D.1,3; Li,B.1; Li,C. K.1; Li,G.1; Li,M. S.1; Li,W.1; Li,X.1; Li,X. B.1; Li,X. F.1; Li,Y. G.1; Li,Z. W.1; Liang,X. H.1; Liao,J. Y.1; Liu,B. S.1; Liu,G. Q.6; Liu,H. W.1; Liu,X. J.1; Liu,Y. N.7; Lu,B.1; Lu,X. F.1; Luo,Q.1,3; Luo,T.1; Ma,X.1; Meng,B.1; Nang,Y.1,3; Nie,J. Y.1; Ou,G.1; Sai,N.1,3; Shang,R. C.6; Song,X. Y.1; Sun,L.1; Tan,Y.1; Tuo,Y. L.1,3; Wang,C.8; Wang,G. F.1; Wang,J.1; Wang,L. J.1; Wang,W. S.1; Wang,Y. D.5; Wang,Y. S.1; Wen,X. Y.1; Wu,B. B.1; Wu,B. Y.1,3; Wu,M.1; Xiao,G. C.1,3; Xiao,S.1,3; Xiong,S. L.1; Xu,H.1; Yang,J. W.1; Yang,S.1; Yang,Y. J.1; Yang,Y. J.1; Yi,Q. B.1,3; Yin,Q. Q.1; You,Y.1; Zhang,A. M.1; Zhang,C. M.1; Zhang,F.1; Zhang,H. M.1; Zhang,J.1; Zhang,T.1; Zhang,W. C.1; Zhang,W.1,3; Zhang,W. Z.5; Zhang,Y.1; Zhang,Y. F.1; Zhang,Y. J.1; Zhang,Y.1,3; Zhang,Z.8; Zhang,Z.7; Zhang,Z. L.1; Zhao,H. S.1; Zhao,X. F.1,3; Zheng,S. J.1; Zheng,Y. G.9; Zhou,D. K.1,3; Zhou,J. F.7; Zhuang,R. L.7; Zhu,Y. X.1; Zhu,Y.1
2020-08-01
Source PublicationThe Astrophysical Journal Letters
ISSN2041-8205
Volume899Issue:1
AbstractAbstract We report on the observation of the accreting pulsar GRO J1008-57 performed by Insight-Hard X-ray Modulation Telescope (HXMT) at the peak of the source’s 2017 outburst. Pulsations are detected with a spin period of 93.283(1) s. The pulse profile shows double peaks at soft X-rays, and only one peak above 20 keV. The spectrum is well described by the phenomenological models of X-ray pulsars. A cyclotron resonant scattering feature (CRSF) is detected with very high statistical significance at a centroid energy of keV, for the reference continuum and line models, HIGHECUT and GABS, respectively. Detection is very robust with respect to different continuum models. The line energy is significantly higher than what is suggested from previous observations, which provided very marginal evidence for the line. This establishes a new record for the centroid energy of a fundamental CRSF observed in accreting pulsars. We also discuss the accretion regime of the source during the Insight-HXMT observation.
KeywordHigh mass x-ray binary stars Pulsars Magnetic fields
DOI10.3847/2041-8213/abac05
Language英语
WOS IDIOP:2041-8205-899-1-abac05
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/62786
Collection中国科学院国家天文台
Affiliation1.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, People’s Republic of China; zhangsn@ihep.ac.cn
2.Institut für Astronomie und Astrophysik, Kepler Center for Astro and Particle Physics, Eberhard Karls, Universit?t, Sand 1, D-72076 Tübingen, Germany ji.long@astro.uni-tuebingen.de
3.University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
4.Department of Astronomy, Tsinghua University, Beijing 100084, People’s Republic of China
5.Department of Astronomy, Beijing Normal University, Beijing 100088, People’s Republic of China
6.Department of Physics, Tsinghua University, Beijing 100084, People’s Republic of China
7.Department of Engineering Physics, Tsinghua University, Beijing 100084, People’s Republic of China
8.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China
9.College of physics Sciences & Technology, Hebei University, No. 180 Wusi Dong Road, Lian Chi District, Baoding City, Hebei Province 071002 People’s Republic of China
Recommended Citation
GB/T 7714
Ge,M. Y.,Ji,L.,Zhang,S. N.,et al. Insight-HXMT Firm Detection of the Highest-energy Fundamental Cyclotron Resonance Scattering Feature in the Spectrum of GRO J1008-57[J]. The Astrophysical Journal Letters,2020,899(1).
APA Ge,M. Y..,Ji,L..,Zhang,S. N..,Santangelo,A..,Liu,C. Z..,...&Zhu,Y..(2020).Insight-HXMT Firm Detection of the Highest-energy Fundamental Cyclotron Resonance Scattering Feature in the Spectrum of GRO J1008-57.The Astrophysical Journal Letters,899(1).
MLA Ge,M. Y.,et al."Insight-HXMT Firm Detection of the Highest-energy Fundamental Cyclotron Resonance Scattering Feature in the Spectrum of GRO J1008-57".The Astrophysical Journal Letters 899.1(2020).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ge,M. Y.]'s Articles
[Ji,L.]'s Articles
[Zhang,S. N.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ge,M. Y.]'s Articles
[Ji,L.]'s Articles
[Zhang,S. N.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ge,M. Y.]'s Articles
[Ji,L.]'s Articles
[Zhang,S. N.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.