MALS discovery of a rare H I 21 cm absorber at z ∼ 1.35: Origin of the absorbing gas in powerful active galactic nuclei

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Fig. 8.

Velocity width between the nulls of the absorption profiles, ΔV_null (in km s⁻¹) as a function of τ_1σ, 30 for all the 16 quasars listed in Table A.1. The markers and dotted vertical lines are same as in Fig. 7. The dashed vertical line marks the median τ_1σ, 30 of higher τ_1σ, 30 bin.

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