Lyalpha emission in JADES, GLASS and CEERS gal.

We obtain Ly{alpha} equivalent width (EW), Ly{alpha} escape fraction, and ionizing photon production efficiency measurements or upper limits for these galaxies, and confirm that the Lya-emitting galaxy fraction decreases toward higher redshifts.

We derive Ly{alpha} luminosity functions from z~5 to z~10-14 with the observed Ly{alpha} EW distributions and galaxy UV luminosity functions, and find an ~3dex decrease in number density at L_Ly{alpha}_=10^42^-10^43^erg/s over the redshift range. Notably, this study presents the first constraints on the Ly{alpha} luminosity function at z~8-14. We obtain the neutral hydrogen fractions of x_HI_=0.17_-0.16_^+0.23^, 0.63_-0.28_^+0.18^, 0.79_-0.21_^+0.13^, and 0.88_-0.13_^+0.11^ at z~6, 7, 8-9, and 10-14, respectively, via comparisons of the reionization models developed by seminumerical simulations with 21cmFAST explaining the observations of Ly{alpha}, UV continuum, and Planck electron optical depth.