Diagnostic of the spectral properties of Aquila X-1 by Insight-HXMT snapshots during the early propeller phase

Autor: Jing-Kang Deng, Shaolin Xiong, Q. Luo, Xiaohua Liang, Yuan You, Youli Tuo, Jing Jin, Yin Xu, Jinyi Yang, X. F. Li, Z. L. Zhang, Ju Guan, Y. B. Chen, Lei Sun, Fangjun Lu, Da-Wei Han, Mingzhe Li, W. G. Li, Wenda Zhang, C. Cai, Chuan-Peng Zhang, Y. Huang, Z. W. Li, Jundan Nie, Can Güngör, Hongwei Liu, Li-Ming Song, Y. G. Li, Bobing Wu, Andrea Santangelo, Xufang Li, ShiJie Zheng, Min-Xue Fu, Luhua Jiang, Ti-Pei Li, Gang Li, Y. W. Dong, N. Sai, J. X. Wang, Y. Nang, G. C. Xiao, Shuinai Zhang, Jing Zhou, Xin Lu, Y. N. Liu, Yuan-Yuan Du, Jia Huo, X. Y. Wen, Junqiang Zhang, Y. Tan, F. Zhang, Bin Meng, W. C. Jiang, G. F. Wang, Yi Zhang, C. K. Li, Wei-Wei Cui, L. D. Kong, H. M. Zhang, Shuo Xiao, W. C. Zhang, M. Gao, Bo Lu, Guo-Ming Chen, Xuchao Zhao, C. Wang, Shu-Mei Jia, Shuang-Nan Zhang, G. H. Gao, Aimei Zhang, Ge Ou, Weiguang Cui, Qingcui Bu, HongSheng Zhao, C. Z. Liu, W. Z. Zhang, Y. Zhang, Mingyu Wu, Q. Q. Yin, Y. P. Chen, GuoQing Liu, Bing Li, Y. J. Yang, D. K. Zhou, Y. S. Wang, Yi Chen, Ming-Yu Ge, Xiao-Jing Liu, Xiaobo Li, Youcai Zhang, S. Yang, L. Chen, X. Y. Song, Zhe Chang, T. Zhang, X.W. Ma, Lian Tao, Yi-Nan Zhu, Cheng-Cheng Guo, W. S. Wang, T. Luo, Q. B. Yi, B. Y. Wu, Jin-Yuan Liao, X. L. Cao, He Gao, Z. Zhang, Yan Zhu, Long Ji, Tianran Chen, Yu-Dong Gu
Rok vydání: 2020
Předmět:
Zdroj: Journal of High Energy Astrophysics. 25:10-16
ISSN: 2214-4048
DOI: 10.1016/j.jheap.2019.12.001
Popis: We study the 2018 outburst of Aql X-1 via the monitor of all sky X-ray image (MAXI) data. We show that the outburst starting in February 2018 is a member of short-low class in the frame of outburst duration and the peak count rate although the outburst morphology is slightly different from the other fast-rise-exponential-decay (FRED) type outbursts with a milder rising stage. We study the partial accretion in the weak propeller stage of Aql X-1 via the MAXI data of the 2018 outburst. We report on the spectral analysis of 3 observations of Aquila X-1 obtained by Insight – hard X-ray modulation telescope (Insight-HXMT) during the late decay stage of the 2018 outburst. We discuss that the data taken by Insight-HXMT is just after the transition to the weak propeller stage. Our analysis shows the necessity of a comptonization component to take into account the existence of an electron cloud resulting photons partly up-scattered.
Databáze: OpenAIRE
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