A2 Refereed review article in a scientific journal
Probing the strong gravity region of black holes with eXTP
Authors: Bu, Qingcui; Bambi, Cosimo; Gou, Lijun; Xu, Yanjun; Uttley, Phil; De Rosa, Alessandra; Santangelo, Andrea; Zane, Silvia; Feng, Hua; Zhang, Shuang-Nan; Jin, Chichuan; Pan, Haiwu; Shu, Xinwen; Ursini, Francesco; Wang, Yanan; Wu, Jianfeng; You, Bei; Yuan, Yefei; Zhang, Wenda; Bianchi, Stefano; Dai, Lixin; Di Salvo, Tiziana; Dovčiak, Michal; Feng, Yuan; Guo, Hengxiao; Ingram, Adam; Jiang, Jiachen; Karas, Vladimír; Li, Dongyue; Liu, Honghui; Masteroserio, Guglielmo; Matt, Giorgio; Motta, Sara; Mou, Guobin; Nosirov, Abdurakhmon; Pan, Zhen; Qiao, Erlin; Shen, Rongfeng; Shui, Qingcang; Song, Yujia; Svoboda, Jiří; Tao, Lian; Veledina, Alexandra; Yan, Zhen; Zhao, Tong
Publisher: Springer Science and Business Media LLC
Publication year: 2025
Journal: SCIENCE CHINA Physics, Mechanics and Astronomy
Article number: 119504
Volume: 68
ISSN: 1674-7348
eISSN: 1869-1927
DOI: https://doi.org/10.1007/s11433-025-2789-2
Publication's open availability at the time of reporting: No Open Access
Publication channel's open availability : Partially Open Access publication channel
Web address : https://link.springer.com/article/10.1007/s11433-025-2789-2
We present the novel capabilities of the enhanced X-ray Timing and Polarimetry (eXTP) mission to study the strong gravity region around stellar-mass black holes in X-ray binary systems and supermassive black holes in active galactic nuclei. eXTP can combine X-ray spectral, timing, and polarimetric techniques to study the accretion process near black holes, measure black hole masses and spins, and test Einstein’s theory of General Relativity in the strong field regime. We show how eXTP can improve the current measurements of black holes of existing X-ray missions and we discuss the scientific questions that can be addressed.
Funding information in the publication:
This work was supported by China’s Space Origins Exploration Program. Shuang-Nan Zhang was supported by the National Natural Science Foundation of China (Grant No. 12333007), the International Partnership Program of Chinese Academy of Sciences (Grant No. 113111KYSB20190020), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA15020100). Alexandra Veledina acknowledges support from the Academy of Finland (Grant No. 355672). Nordita was supported in part by NordForsk.
