# On the central engine of the fastest-declining Type I supernova SN2019bkc

## TL;DR

This paper presents an analytic model for SN2019bkc, a rapidly declining Type I supernova, attributing its light curve to magnetic dipole radiation from a non-explosive white dwarf merger remnant.

## Contribution

It introduces a novel model linking the supernova's light curve to the viscous evolution of a white dwarf merger remnant's magnetic dipole radiation.

## Key findings

- The model explains the rapid decline in brightness.
- The viscous evolution timescale matches observed light curve features.
- Magnetic dipole radiation from the remnant accounts for energy supply.

## Abstract

An analytic model is presented for the fastest-declining Type I supernova SN2019bkc. The model of the central engine consists of the magnetic dipole radiation from a non-explosive remnant of a double white dwarf merger. We consider the viscous evolution of the rotating remnant, which may lead to the diminishing energy supply in an appropriate time scale for the light curve.