Diverse Studies on the Dark Side of the Universe

我们研究了关于宇宙暗面的三个主题：暗能量、暗物质和暗年龄。在暗能量方面，利用斯巴鲁望远镜的新型FMOS仪器进行了星系红移测量的设计研究，该项目已接近实现。对于暗物质，我们研究了宇宙伽马射线背景辐射，特别是活动星系核和恒星形成星系的贡献。这将成为寻找暗物质信号的基础。对于暗年龄，我们继续了伽马射线暴对高红移宇宙的观测研究，并建立了一个新的莱曼α发射体模型，由此我们获得了宇宙再电离的新含义。

We studied in the three topics about the dark side of the universe : dark energy, dark matter, and dark age. For dark energy, the design study of galaxy redshift survey using new FMOS instrument of Subaru Telescope has been performed, and the project is close to the realization. For dark matter, we studied about the cosmic gamma-ray background radiation, especially about the contribution from active galactic nuclei and star-forming galaxies. This will become the basis for searching dark matter signal. For the dark age, we continued observational studies of high-redshift universe by gamma-ray bursts, and also we constructed a new model of Lyman alpha emitters, by which we obtained new implications for cosmic reionization.