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Constraining Type Ia supernova models: SN 2011fe as a test case | | F. K. Roepke
; M. Kromer
; I. R. Seitenzahl
; R. Pakmor
; S. A. Sim
; S. Taubenberger
; F. Ciaraldi-Schoolmann
; W. Hillebrandt
; G. Aldering
; P. Antilogus
; C. Baltay
; S. Benitez-Herrera
; S. Bongard
; C. Buton
; A. Canto
; F. Cellier-Holzem
; M. Childress
; N. Chotard
; Y. Copin
; H. K. Fakhouri
; M. Fink
; D. Fouchez
; E. Gangler
; J. Guy
; S. Hachinger
; E. Y. Hsiao
; C. Juncheng
; M. Kerschhaggl
; M. Kowalski
; P. Nugent
; K. Paech
; R. Pain
; E. Pecontal
; R. Pereira
; S. Perlmutter
; D. Rabinowitz
; M. Rigault
; K. Runge
; C. Saunders
; G. Smadja
; N. Suzuki
; C. Tao
; R. C. Thomas
; A. Tilquin
; C. Wu
; | | Date: |
21 Mar 2012 | | Abstract: | The nearby supernova SN 2011fe can be observed in unprecedented detail.
Therefore, it is an important test case for Type Ia supernova (SN Ia) models,
which may bring us closer to understanding the physical nature of these
objects. Here, we explore how available and expected future observations of SN
2011fe can be used to constrain SN Ia explosion scenarios. We base our
discussion on three-dimensional simulations of a delayed detonation in a
Chandrasekhar-mass white dwarf and of a violent merger of two white
dwarfs-realizations of explosion models appropriate for two of the most
widely-discussed progenitor channels that may give rise to SNe Ia. Although
both models have their shortcomings in reproducing details of the early and
near-maximum spectra of SN 2011fe obtained by the Nearby Supernova Factory
(SNfactory), the overall match with the observations is reasonable. The level
of agreement is slightly better for the merger, in particular around maximum,
but a clear preference for one model over the other is still not justified.
Observations at late epochs, however, hold promise for discriminating the
explosion scenarios in a straightforward way, as a nucleosynthesis effect leads
to differences in the 55Co production. SN 2011fe is close enough to be followed
sufficiently long to study this effect. | | Source: | arXiv, 1203.4839 | | Services: | Forum | Review | PDF | Favorites | |
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