The Einstein Probe (EP) is a small mission of the Chinese Academy of Sciences (CAS) dedicated to time-domain high-energy astrophysics. Its primary goals are to discover high-energy transients and monitor variable objects. To achieve this, EP employs a very large instantaneous field-of-view (3600 square degrees), along with moderate spatial resolution (FWHM ~5 arcmin) and energy resolution. Its wide-field imaging capability is achieved by using established technology of novel lobster-eye optics, thereby offering unprecedentedly high sensitivity and large Grasp, which would supersede previous and existing X-ray all-sky monitors. To complement this powerful capability to discover and monitor sources over a wide area, EP also carries a conventional X-ray focusing telescope with a larger effective area to perform follow-up characterization and precise localization of newly-discovered transients. Public transient alerts will be issued rapidly to trigger multi-wavelength follow-up observations from the world-wide community. The satellite has a weight of ∼1050 kg and average power of ∼825W in total. In the normal survey mode, during one orbit of 97 minutes three fields will be observed on the night-side of the sky with a ~20 min pointing each. Over three orbits almost the entire night sky will be sampled, with cadences ranging from several to a few ten revisits per day depending on the sky location. The mission is aimed for launch by the end of 2022 with a nominal lifetime of 3 years (5 years as a goal).
YUAN WeiMin, ZHANG Chen, CHEN Yong, SUN ShengLi, ZHANG YongHe, CUI Wei, LING ZhiXing, HUANG MaoHai, ZHAO DongHua, WANG WenXin, QIU YuLei, LIU Zhu, PAN HaiWu, CAI HongBo, DENG JinSong, JIA ZhenQing, JIN ChiChuan, SUN Hui , HU HaiBo, LIU FeiFei, ZHANG Mo, SONG LiMing, LU FangJun, JIA ShuMei, LI ChengKui, ZHAO HaiSheng, GE MingYu, ZHANG Juan, CUI WeiWei, WANG YuSa, WANG Juan, SUN XiaoJin, JIN Ge, LI LongHui, CHEN FanSheng, CAI ZhiMing, GUO Tong, LIU GuoHua, LIU HuaQiu, FENG Hua, ZHANG ShuangNan, ZHANG Bing, DAI ZiGao, WU XueFeng and GOU LiJun
Donghua Zhao, Chen Zhang, Weimin Yuan, Shuangnan Zhang, Richard Willingale, Zhixing Ling.
YUAN Weimin, OSBORNE Julian P, ZHANG Chen, WILLINGALE Richard
The 3rd workshop on the Science case of Einstein Probe November 25th,2015 Naoc, Beijing
Weimin Yuan (NAOC, CAS, China), Julian P. Osborne (Leicester Univ. UK)