Gamma-ray signature in the IBIS/ISGRI data. The figure displays the IBIS/ISGRI significance contour map in the 67.5−189 keV band (upper panel) and in the 147−168 keV band (lower panel) for the entire early period (days 16−35 after the explosion). The contours start at the 2σ level and are separated by 0.5σ. The average flux in the upper panel at the position of SN2014J represents a 5.4σ excess after normalization on the standard deviation observed in this map.