Wide-Field MAXI (WF-MAXI: Wide-Field Monitor of All-sky X-ray Image) is a proposed mission to detect and localize X-ray transients including electro-magnetic counterparts of gravitational-wave events such as gamma-ray bursts and supernovae etc., which are expected to be directly detected for the first time in late 2010's by the next generation gravitational telescopes such as Advanced LIGO and KAGRA. The most distinguishing characteristics of WF-MAXI are a wide energy range from 0.7 keV to 1 MeV and a large field of view (~25 % of the entire sky), which are realized by two main instruments: (i) Soft X-ray Large Solid Angle Camera (SLC) which consists of four pairs of crisscross coded aperture cameras using CCDs as one-dimensional fast-readout detectors covering 0.7 - 12 keV and (ii) Hard X-ray Monitor (HXM) which is a multi-channel array of crystal scintillators coupled with avalanche photo-diodes covering 20 keV - 1 MeV.
@article{arxiv.1502.03675,
title = {Wide-Field MAXI: soft X-ray transient monitor},
author = {Makoto Arimoto and Nobuyuki Kawai and Yoichi Yatsu and Hiroshi Tomida and Shiro Ueno and Masashi Kimura and Tatehiro Mihara and Motoko Serino and Mikio Morii and Hiroshi Tsunemi and Atsumasa Yoshida and Takanori Sakamoto and Takayoshi Kohmura and Hitoshi Negoro and Yoshihiro Ueda and Yohko Tsuboi and Ken Ebisawa},
journal= {arXiv preprint arXiv:1502.03675},
year = {2015}
}