Fig. 6
Spectral index (α) vs. linear size (in pc) at the absorber redshift for the quasars with the milliarcsecond scale images. The α are from the arcsecond scale images. Systems towards the quasars with no “core” identifications are plotted as squares. The point for the system towards the quasar B1629+120 that has α = +0.54 and LLS = 7.2 kpc is not plotted to keep the x-axis short. The histogram for the α is also shown. The filled symbols and shaded histogram are for 21-cm detections.
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