The enhanced x-ray timing and polarimetry mission: eXTP: an update on its scientific cases, mission profile and development status
Shuang‐Nan Zhang, A. Santangelo, Y. P. Xu, Marco Feroci, M. Hernanz, F. J. Lu, Yong Chen, Hua Feng, K. Nandra, Weichun Jiang, Jiří Svoboda, S. Brandt, Stéphane Schanne, J. in’t Zand, Malgosia Michalska, E. Bozzo, Emrah Kalemci, Infarto Agudo, Zhenyu Wu, Yichen Liu, Yongquan Su, Jian Wang, Zhen Zhang, Jin Ge, Longhui Li, Xiangbiao Qiu, Yanjian Lin, Tao Li, Jiawei Zhang, Chao Wu, Wei Xu, Zexun Hu, Xu Zhao, Fangjian Qiao, Kai Pan, Shu Zhang, Liming Song, Huilin He, Xue-Lei Cao, Fan Zhang, Hongwei Liu, Xiaojing Liu, Yanji Yang, Zhenghua An, Min Cong, Zeyu Song, Jiawei Zhang, Ke Yu, Yusa Wang, Wei Li, Dawei Han, Juan Wang, Wei Cui, Ziliang Zhang, Hao Wang, Tianxiang Chen, Dali Zhang, Ming Gao, Jia Ma, Jia Huo, Mao-Shun Li, Dongjie Hou, Xiongtao Yang, Zijian Zhao, Xiao‐Fan Zhao, Jingjing Xu, Laidan Luo, Yuxuan Zhu, Can Chen, Honglin Zhang, Xiaohua Liu, Yudong Gu, Yuanyuan Du, S. Yang, L. Sun, Jiechen Jiang, Jiawei Yang, Zefan Dong, Boyu Dai, Yang Jiao, Xiang-Yang Wen, Bin Meng, Aimei Zhang, Ruijie Wang, Tong Zhang, Bing Lü, Na Gao, Jiewei Cao, Xiongwei Xu, T. Luo, Liqiang Qi, Gang Li, Jin‐Lu Qu, S. L. Xiong, Liao Tao, Shumei Jia, Mingyu Ge, Shijie Zheng, Xiao‐Bo Li, Xiang Ma
Abstract
The enhanced x-ray timing and polarimetry mission (eXTP) is a flagship observatory for x-ray timing, spectroscopy and polarimetry developed by an international consortium. Thanks to its very large collecting area, good spectral resolution and unprecedented polarimetry capabilities, eXTP will explore the properties of matter and the propagation of light in the most extreme conditions found in the universe. eXTP will, in addition, be a powerful x-ray observatory. The mission will continuously monitor the x-ray sky, and will enable multi-wavelength and multi-messenger studies. The mission is currently in phase B, which will be completed in the middle of 2022.