Spectra and Light Curves of Failed Supernovae

TL;DR

This paper presents radiation-hydrodynamics simulations of spectra and light curves for various types of failed supernovae, which are transients from mechanisms not primarily causing supernova explosions.

Contribution

It provides the first detailed modeling of spectra and light curves for failed supernovae, expanding understanding of their observational signatures.

Findings

Simulated spectra and light curves for fallback supernovae

Predicted observational features of accretion-induced collapse

Characterization of light curves for type .Ia supernovae

Abstract

Astronomers have proposed a number of mechanisms to produce supernova explosions. Although many of these mechanisms are now not considered primary engines behind supernovae, they do produce transients that will be observed by upcoming ground-based surveys and NASA satellites. Here we present the first radiation-hydrodynamics calculations of the spectra and light curves from three of these "failed" supernovae: supernovae with considerable fallback, accretion induced collapse of white dwarfs, and energetic helium flashes (also known as type .Ia supernovae).