Simulating Hydrogen-poor Interaction-Powered Supernovae with CHIPS

TL;DR

This paper introduces an updated open-source simulation code, CHIPS, capable of modeling hydrogen-poor interaction-powered supernovae, successfully reproducing their light curves and explaining precursor luminosities.

Contribution

The update extends CHIPS to model hydrogen-poor SNe from stripped progenitors, enabling detailed simulation of Type Ibc supernovae and their precursor phenomena.

Findings

Successfully reproduces light curves of SNe Ibc, Type Ibn, and Icn.

Explains precursor luminosities through outbursts creating dense CSM.

Suggests eruptive mass-loss scenarios based on simulation results.

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 massive circumstellar medium (CSM) as well as the formation process of the CSM. Our update mainly concerns with extensions to hydrogen-poor SNe from stripped progenitors, targeting 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 partial eruption of the outermost layer with a mass of $0.01$--$0.1\,M_\odot$ at $\lesssim 1$ 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.