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Fig. A.1


Asymmetrical line profiles of hydrogen Lyman alpha line at nine positions across the 201-point field of view. The blue line shows the cumulative profile from ten unaligned threads with randomly generated velocities. The dashed red line shows the profile of a singular, stationary thread. The intensity is given in 105 erg s-1 cm-2 sr-1 Å-1. The horizontal axis gives the distance from line centre Δλ in Å.

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