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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/32246
Title: X-ray reprocessing in accreting pulsar GX 301-2 observed with Insight-HXMT
Authors: Ji, L.
Doroshenko, V.
Suleimanov, V.
Santangelo, A.
ORLANDINI, MAURO 
LIU, Scige' John 
Ducci, L.
Zhang, S. N.
Nabizadeh, A.
Gavran, D.
Zhang, S.
Ge, M. Y.
Li, X. B.
Tao, L.
Bu, Q. C.
Qu, J. L.
Lu, F. J.
Chen, L.
Song, L. M.
Li, T. P.
Xu, Y. P.
Cao, X. L.
Chen, Y.
Liu, C. Z.
Cai, C.
Chang, Z.
Chen, T. X.
Chen, Y. P.
Cui, W. W.
Du, Y. Y.
Gao, G. H.
Gao, H.
Gu, Y. D.
Guan, J.
Guo, C. C.
Han, D. W.
Huang, Y.
Huo, J.
Jia, S. M.
Jiang, W. C.
Jin, J.
Kong, L. D.
Li, B.
Li, C. K.
Li, G.
Li, W.
Li, X.
Li, X. F.
Li, Z. W.
Liang, X. H.
Liao, J. Y.
Liu, B. S.
Liu, H. X.
Liu, H. W.
Liu, X. J.
Lu, X. F.
Luo, Q.
Luo, T.
Ma, R. C.
Ma, X.
Meng, B.
Nang, Y.
Nie, J. Y.
Ou, G.
Ren, X. Q.
Sai, N.
Song, X. Y.
Sun, L.
Tan, Y.
Tuo, Y. L.
Wang, C.
Wang, L. J.
Wang, P. J.
Wang, W. S.
Wang, Y. S.
Wen, X. Y.
Wu, B. Y.
Wu, B. B.
Wu, M.
Xiao, G. C.
Xiao, S.
Xiong, S. L.
Yang, R. J.
Yang, S.
Yang, Yan-Ji
Yang, Yi-Jung
Yi, Q. B.
Yin, Q. Q.
You, Y.
Zhang, F.
Zhang, H. M.
Zhang, J.
Zhang, P.
Zhang, W.
Zhang, W. C.
Zhang, Yi
Zhang, Y. F.
Zhang, Y. H.
Zhao, H. S.
Zhao, X. F.
Zheng, S. J.
Zheng, Y. G.
Zhou, D. K.
Issue Date: 2021
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 501
Issue: 2
First Page: 2522
Abstract: We investigate the absorption and emission features in observations of GX 301-2 detected with Insight-HXMT/LE in 2017-2019. At different orbital phases, we found prominent Fe Kα, Kβ, and Ni Kα lines, as well as Compton shoulders and Fe K-shell absorption edges. These features are due to the X-ray reprocessing caused by the interaction between the radiation from the source and surrounding accretion material. According to the ratio of iron lines (Kα and Kβ), we infer the accretion material is in a low ionization state. We find an orbital-dependent local absorption column density, which has a large value and strong variability around the periastron. We explain its variability as a result of inhomogeneities of the accretion environment and/or instabilities of accretion processes. In addition, the variable local column density is correlated with the equivalent width of the iron Kα lines throughout the orbit, which suggests that the accretion material near the neutron star is spherically distributed.
URI: http://hdl.handle.net/20.500.12386/32246
URL: http://arxiv.org/abs/2012.02556v1
https://academic.oup.com/mnras/article/501/2/2522/6030041
ISSN: 0035-8711
DOI: 10.1093/mnras/staa3788
Bibcode ADS: 2021MNRAS.501.2522J
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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