Fig. 6

Similar to Fig. 1, but for GRB 070721B
(z = 3.6298). Object D4 is the host galaxy. Object D3 is the
galaxy counterpart to the intervening DLA (z = 3.094) towards
GRB 070721B. The impact parameter of the DLA galaxy is 1′′ (7.9 kpc). The line of
sight of object D7 also traverses a DLA at z = 3.085. The distance
between objects D3 and D7 is 216,
corresponding to a projected distance of 167.4 kpc at z = 3.09. The
inset is a 5′′ zoom-in on the position of D3. The afterglow position is marked by
the cross-hair.
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