Fig. 2
Broadband SED of GRB 110918A, including optical, NIR, and X-ray data. The SED was
constructed using GROND data at a mid-time of
T0 + 194 ks and X-ray data between
T0 + 140 ks and
T0 + 250 ks. The best-fit parameters for a power-law
(χ2/d.o.f. = 85/73)
are: a spectral slope of β = 0.70 ± 0.02, a hydrogen column density
of 
cm-2, and a line-of-sight extinction of
, assuming SMC-like
dust.
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