Optical light curve in the V band versus the time after the explosion. Filled dots represent the data obtained with the OMC camera on board INTEGRAL without correcting from extinction, empty dots the data provided by Las Cumbres Observatory Global Telescope Network (Marion et al. 2015). The solid line is a delayed detonation (DDT) that gives a good fit to the SN2014J OMC light curve. It produces 0.65 M_⊙ of ⁵⁶Ni, and ejects a total mass of 1.37 M_⊙ with a kinetic energy of 1.3 × 10⁵¹ erg. The dashed line represents a similar DDT explosion in which a 1.2 M_⊙ white dwarf is embedded in a 0.2 M_⊙ halo made of carbon and oxygen, and it is intended to be representative of merging models (double degenerates, or DD models). The dotted line is for a model fitting the light-curve properties of SN2011fe (Isern et al. 2013).