Simulating Hydrogen-poor Interaction-powered Supernovae with CHIPS

Abstract

We present the updated open-source code Complete History of Interaction-Powered Supernovae ( CHIPS ) that can be applied to modeling supernovae (SNe) arising from an interaction with the massive circumstellar medium (CSM) as well as the formation process of the CSM. Our update mainly concerns extensions to hydrogen-poor SNe from stripped progenitors, targeting the modeling of interaction-powered SNe Ibc, such as Type Ibn and Icn SNe. We successfully reproduce the basic properties of the light curves of these types of SNe that occur after the partial eruption of the outermost layer with a mass of 0.01–0.1 M _⊙ at ≲1 year before explosion. We also find that the luminosity of the observed precursors can be naturally explained by the outburst that creates the dense CSM, given that the energy of the outburst is efficiently dissipated by collision with an external material, possibly generated by a previous mass eruption. We discuss possible scenarios causing eruptive mass loss based on our results.

Keywords

• Supernovae
• Circumstellar matter
• Stellar mass loss
• Radiative transfer
• Computational methods