ARTIS is a 3D radiative transfer code for Type Ia supernovae using the Monte Carlo method with indivisible energy packets. It incorporates polarization and virtual packets and non-LTE physics appropriate for the nebular phase of Type Ia supernovae.
https://ui.adsabs.harvard.edu/abs/2007MNRAS.375..154S , https://ui.adsabs.harvard.edu/abs/2009MNRAS.398.1809K ; see additional citation information here: https://github.com/artis-mcrt/artis/blob/develop/CITATION.cff