Origin and Evolution of Ionized Gas Clouds in Quasars

一个类星体，一个位于中心的超大质量黑洞，被电离气体包围。虽然气体的物理性质是揭示类星体起源和演化的线索，但由于距离太远，很难直接探测空间结构。而我们发展的引力透镜方法使之成为可能。通过对观测数据的分析和模型计算，我们发现大距离电离气体与邻近类星体中的气体具有相同的空间尺度。

A quasar, a super massive black hole locates at the center, is surrounded by ionized gas. Though physical properties of the gas are clues to unveil origin and evolution of quasars, it was hard to directly probe the spatial structure due to the large distance. However, a method by using gravitational lens which is developed by us make it possible. After we have finished analysis of observational data and model calculations, we found that ionized gas at the large distance extends as the same spatial scale as the gas in nearby quasars.