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Fig. 2


GRB 120729A: rest-frame X-ray to optical SED of the AG at tt0 = 0.42 d. A single PL provides a good fit to the data, with β = 1.0 ± 0.1. Our best-fitting parameters (χ2/ d.o.f. = 29.6/28) are AV = 0.15 mag (<0.55 at 90% CL), and an intrinsic column absorption of NH = 1.0 × 1021 cm-2 ( < 2.7 × 1021 at 90% CL).

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