Early light curves for Type Ia supernova explosion models

Abstract Upcoming high-cadence transient survey programmes will produce a wealth of observational data for Type Ia supernovae. These data sets will contain numerous events detected very early in their evolution, shortly after explosion. Here, we present synthetic light curves, calculated with the ra...

Full description

Saved in:
Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2017-12, Vol.472 (3), p.2787-2799
Main Authors: Noebauer, U. M., Kromer, M., Taubenberger, S., Baklanov, P., Blinnikov, S., Sorokina, E., Hillebrandt, W.
Format: Article
Language:English
Subjects:
Deflagration
Ejecta
Ejection
Evolution
Explosions
Light curve
Mathematical models
Photometry
Radiation
Radioactive materials
Supernovae
Citations: Items that this one cites
Items that cite this one
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Abstract Upcoming high-cadence transient survey programmes will produce a wealth of observational data for Type Ia supernovae. These data sets will contain numerous events detected very early in their evolution, shortly after explosion. Here, we present synthetic light curves, calculated with the radiation hydrodynamical approach Stella for a number of different explosion models, specifically focusing on these first few days after explosion. We show that overall the early light curve evolution is similar for most of the investigated models. Characteristic imprints are induced by radioactive material located close to the surface. However, these are very similar to the signatures expected from ejecta–CSM or ejecta–companion interaction. Apart from the pure deflagration explosion models, none of our synthetic light curves exhibit the commonly assumed power-law rise. We demonstrate that this can lead to substantial errors in the determination of the time of explosion. In summary, we illustrate with our calculations that even with very early data an identification of specific explosion scenarios is challenging, if only photometric observations are available.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/stx2093