What powers the galaxies with Lyman continuum escapequestionMark

Lyman continuum escape (LyC) from galaxies, responsible for the reionization ofthe Universe in the first billion years, has been a hot topic and puzzle bothfor theory and observations for over two decades. However, a population of z0.3starburst (Green Pea) galaxies was found to leak LyC, and our recent XMMNewtonobservations of three Green Pea galaxies revealed a significant Xray excess intwo out of the three sources. We propose a 110ks XMMNewton observation of oneGreen Pea galaxy with already Hubble Space Telescopeconfirmed LyC leakage. Thiswill allow us for the first time to explore the link between Xray emission andLyC escape. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]