Extended Data Fig. 1: Relative line-of-sight HI column densities as a function of projected distance at z=5.4 for all background-galaxy pairs. | Nature Astronomy

Extended Data Fig. 1: Relative line-of-sight HI column densities as a function of projected distance at z=5.4 for all background-galaxy pairs.

From: A dense web of neutral gas in a galaxy proto-cluster post-reionization

Extended Data Fig. 1: Relative line-of-sight HI column densities as a function of projected distance at z=5.4 for all background-galaxy pairs.The alternative text for this image may have been generated using AI.

The right hand panel indicates the CDF of N_HI-ratios. The dashed line indicates the median of the observed distribution of N_HI ratio for galaxies with projected distances between 100 kpc and 1000 kpc. Error bars denote the quadratic uncertainty on the column density ratio. The galaxies associated with the smallest on-sky projected distance display similar column-densities. Objects with projected distance d < 100, d > 100 kpc are indicated in black and blue respectively.

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