Pre-nebular Light Curves of SNe i

W David Arnett, Christopher Fryer, Thomas Matheson

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We compare analytic predictions of supernova light curves with recent high-quality data from SN2011fe (Ia), KSN2011b (Ia), and the Palomar Transient Factory and the La Silla-QUEST variability survey (LSQ) (Ia). Because of the steady, fast cadence of observations, KSN2011b provides unique new information on SNe Ia: the smoothness of the light curve, which is consistent with significant large-scale mixing during the explosion, possibly due to 3D effects (e.g., Rayleigh-Taylor instabilities), and provides support for a slowly varying leakage (mean opacity). For a more complex light curve (SN2008D, SN Ib), we separate the luminosity due to multiple causes and indicate the possibility of a radioactive plume. The early rise in luminosity is shown to be affected by the opacity (leakage rate) for thermal and non-thermal radiation. A general derivation of Arnett's rule again shows that it depends upon all processes heating the plasma, not just radioactive ones, so that SNe Ia will differ from SNe Ibc if the latter have multiple heating processes.

Original languageEnglish (US)
Article number33
JournalAstrophysical Journal
Volume846
Issue number1
DOIs
StatePublished - Sep 1 2017

Fingerprint

light curve
opacity
leakage
luminosity
heating
nonthermal radiation
Taylor instability
thermal radiation
industrial plants
data quality
plumes
supernovae
explosions
explosion
derivation
plume
plasma
causes
prediction
predictions

Keywords

  • supernovae: general
  • supernovae: individual (SN2011fe, KSN2011b, 2008D)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Pre-nebular Light Curves of SNe i. / Arnett, W David; Fryer, Christopher; Matheson, Thomas.

In: Astrophysical Journal, Vol. 846, No. 1, 33, 01.09.2017.

Research output: Contribution to journalArticle

Arnett, W David ; Fryer, Christopher ; Matheson, Thomas. / Pre-nebular Light Curves of SNe i. In: Astrophysical Journal. 2017 ; Vol. 846, No. 1.
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