The physics of the intergalactic medium in relation to high redshift galaxies and quasars

星系间介质(IGM)是一个关于宇宙演化的非凡信息库，尤其是关于IGM与星系或类星体之间相互作用的信息。事实上，IGM保留了大尺度结构演化、再电离、热和金属丰度历史以及所有这些影响结构形成和演化的反馈效应的印记。因此，研究类星体和星系环境的性质可以提供丰富的信息，例如它们的发射光谱、本征光度、寿命和恒星形成活动。因此，对IGM的研究对于更好地从整体上理解星系/类星体的形成和演化过程是基础的。本项目的主要目的是改善我们目前对IGM物理状态的了解，无论是在再电离过程中还是之后。

The Intergalactic medium (IGM) is an extraordinary repository of information about cosmic evolution and, more in particular, about the interplay between IGM and galaxies or quasars. In fact, the IGM keeps the imprints of large scale structure evolution, reionization, thermal and metallicity history as well as of all those feedback effects that shape the formation and evolution of structures. For this reason, the study of the properties of quasars' and galaxies' environment can provide a wealth of information on e.g. their emitting spectra, intrinsic luminosities, lifetimes and star formation activity.Thus, the study of the IGM is fundamental for a better understanding of the galaxy/quasar formation and evolution process as a whole.The main aim of the project presented in this proposal is to improve our current knowledge of the IGM physical state at different epochs, both during and after the reionization process.