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Lyman continuum escape openParLyCclosePar from galaxies comma responsible for the reionization of the Universe in the first billion years comma has been a hot topic and puzzle both for theory and observations for over two decades. However comma a population of z=0.3 starburst openParGreen PeaclosePar galaxies was found to leak LyC comma and our recent XMM-Newton observations of three Green Pea galaxies revealed a significant X-ray excess in two out of the three sources. We propose a 110ks XMM-Newton observation of one Green Pea galaxy with already Hubble Space Telescope-confirmed LyC leakage. This will allow us for the first time to explore the link between X-ray emission and LyC escape.

星系的莱曼连续谱逃逸（Lyman continuum escape, LyC）是主导宇宙初代十亿年再电离过程的关键物理现象，二十余年来始终是理论与观测研究领域的热点议题与未解谜题。然而，研究人员发现红移z=0.3的星暴绿豌豆（Green Pea）星系存在LyC逃逸现象；我们近期对三颗绿豌豆星系开展的XMM-牛顿观测显示，其中两个源呈现显著的X射线超量。我们提议对一颗已被哈勃空间望远镜证实存在LyC逃逸的绿豌豆星系进行110千秒的XMM-牛顿观测，这将首次让我们得以探究X射线辐射与LyC逃逸之间的内在关联。