X射线暂现源是指黑洞或中子星与正常恒星组成的、流强变化剧烈的X射线双星系统，在平静时它们往往不可见，但爆发时却成为天空中一类最亮的X射线源。由于X射线暂现源和极端的物理过程密切相关，因此是天文研究的热门，也是多波段和多信使天文研究的重要对象。捕捉 、定位新的X射线暂现源并引领空间和地面的设备进行后随观测是慧眼卫星（Insight-HXMT）的重要目标。本项目将利用改进的重建算法处理慧眼-HXMT对银道面的深度扫描巡天数据，搜寻新的暂现爆发源或新爆发现象，同时利用慧眼对黑洞X射线双星的高频高统计量定点观测数据，开展精细的时变和能谱研究，探讨态的快速转换和吸积流性质、黑洞自旋测量、QPO形成机制、铁线起源和演化、喷流等前沿问题。

Transient X-ray sources are black hole or neutron star X-ray binaries with dramatic flux variations. They are usually undetectable in quiescent states but become the brightest celestial X-ray sources in burst states. Because of their close relation with the extreme physical processes, X-ray transients are frontiers of astrophysics study and important targets for multi-wavelength and multi-messenger astronomy. To hunt and locate X-ray transients and then trigger follow-up observations are important scientific objects of Insight-HXMT. With the support of this project, we will search for new transient sources and phenomena with the scan observations of Insight-HXMT on the Galactic plane, using an innovative reconstruction technique we recently developed. We will also study black hole X-ray binaries with the high quality data obtained by Insight-HXMT in pointed observations. These studies will provide us the precise temporal and spectroscopic properties of X-ray binaries, to probe into questions such as transition of accretion and emission states, measurement of black hole spin, and origins of QPOs, jets and Iron line emission.