Fig. 5.
Comparison between the EW of Hα in the environment of the two, closest, long GRBs. GRB 111005A, at DL = 62 Mpc, is seen in the two left panels, GRB 980425, at DL = 39 Mpc, in the two right panels. The top row shows Hα, the bottom row [O III](λ5007). The galaxy centre of light is indicated by a black filled circle in the case of GRB 111005A. Each panel is approximately 20 × 20 arcsec in size, corresponding to a physical scale of 4.7 × 4.7 kpc and 3.5 × 3.5 kpc for the fields of GRB 111005A and GRB 980425, respectively.
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