Constraining the neutral fraction of hydrogen in the IGM at redshift 7.5

Austin Hoag, Maruša Bradač, Kuang-Han Huang +8

We present a large spectroscopic campaign with Keck/MOSFIRE targeting Lyman-alpha emission (Ly$\hat{I}\pm$) from intrinsically faint Lyman-break Galaxies (LBGs) behind 12 efficient galaxy…