Early light curves for Type Ia supernova explosion models

U. M. Noebauer, M. Kromer, S. Taubenberger, P. Baklanov, S. Blinnikov, E. Sorokina, W. Hillebrandt

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)2787-2799
Number of pages13
JournalMonthly Notices of the Royal Astronomical Society
Volume472
Issue number3
DOIs
Publication statusPublished - Dec 2017

Keywords

  • Hydrodynamics
  • Radiative transfer
  • Supernovae: general
  • SN 2011FE
  • radiative transfer
  • DEFLAGRATION MODELS
  • hydrodynamics
  • supernovae: general
  • SHOCK BREAKOUT
  • MAXIMUM LIGHT
  • MASS MODELS
  • RISE-TIME
  • SYNTHETIC OBSERVABLES
  • SPECTRA
  • RADIATIVE-TRANSFER CALCULATIONS
  • WHITE-DWARF MODELS

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