IGM Reionisation

Double-peaked Lyman-alpha emission at z=6.803: a reionisation-era galaxy self-ionising its local H II bubble

We report the discovery of a double-peaked Lyman-alpha profile in a galaxy at $z=6.803$, A370p z1, in the parallel Frontier Field of Abell 370. The velocity separation between the blue and red peaks of the Lyman-alpha profile ($\Delta …

The role of galaxies and AGN in reionising the IGM - III : IGM-galaxy cross-correlations at $z\sim 6$ from 8 quasar fields with DEIMOS and MUSE

We present improved results of the measurement of the correlation between galaxies and the intergalactic medium (IGM) transmission at the end of reionisation. We have gathered a sample of $13$ spectroscopically confirmed Lyman-break galaxies (LBGs) …

The role of galaxies and AGNs in reionizing the IGM - II. Metal-tracing the faint sources of reionization at 5 ≲ z ≲ 6

We present a new method to study the contribution of faint sources to the UV background using the 1D correlation of metal absorbers with the intergalactic medium (IGM) transmission in a Quasi Stellar Object (QSO) sightline. We take advantage of a …