Fig. 6
From: A luminous blue kilonova and an off-axis jet from a compact binary merger at z = 0.1341
Early optical emission from short GRBs. Comparison between the kilonova AT2017gfo (dashed line; the hatched area shows the ±1 mag region) and the optical counterparts of nearby short GRBs. Vertical error bars are 1 σ. Downward triangles are 3 σ upper limits. Due to the limited spectral coverage of most events, we did not apply a k-correction and present the absolute magnitudes in the observed r-band filter. However, given the low redshift of these events, we expect this correction factor to be <0.5 mag. The data are from refs. 40,66,67,68
