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Title: Pair-instability Supernova Simulations: Progenitor Evolution, Explosion, and Light Curves

Abstract

In recent years, the viability of the pair-instability supernova (PISN) scenario for explaining superluminous supernovae has all but disappeared except for a few slowly-evolving examples. However, PISNe are not predicted to be superluminous throughout the bulk of their mass range. In fact, it is more likely that the first PISN we see (if we have not seen one already) will not be superluminous. Here, we present hydrodynamic simulations of PISNe for four stellar models with unique envelope properties spanning the PISN mass range. In addition, we compute synthetic light curves (LCs) for comparison with current and future observations. We also investigate, in the context of our most massive model, the prospect of mixing in the supernova ejecta, alleviating discrepancies between current PISN models and the remaining superluminous candidate events. To this end, we present the first published 3D hydrodynamic simulations of PISNe. After achieving convergence between 1D, 2D, and 3D simulations, we examine mixing in the supernova ejecta and its affect on the bolometric LC. We observe slight deviations from spherical symmetry, which increase with the number of dimensions. We find no significant effects on the bolometric LC; however, we conclude that mixing between the silicon and oxygen rich layersmore » caused by the Rayleigh–Taylor instability may affect spectra.« less

Authors:
;  [1];  [2];  [3];  [4]
  1. Department of Physics, North Carolina State University, Raleigh, NC 27695 (United States)
  2. The Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978 (Israel)
  3. Astrophysics group, School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire ST5 5BG (United Kingdom)
  4. Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur (Malaysia)
Publication Date:
OSTI Identifier:
22679876
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 846; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BOLOMETERS; COMPARATIVE EVALUATIONS; CONVERGENCE; EXPLOSIONS; HYDRODYNAMIC MODEL; LAYERS; MASS; OXYGEN; RADIANT HEAT TRANSFER; RAYLEIGH-TAYLOR INSTABILITY; SILICON; SIMULATION; SPECTRA; STAR EVOLUTION; SUPERNOVAE; SYMMETRY; VISIBLE RADIATION

Citation Formats

Gilmer, Matthew S., Fröhlich, Carla, Kozyreva, Alexandra, Hirschi, Raphael, and Yusof, Norhasliza, E-mail: msgilmer@ncsu.edu. Pair-instability Supernova Simulations: Progenitor Evolution, Explosion, and Light Curves. United States: N. p., 2017. Web. doi:10.3847/1538-4357/AA8461.
Gilmer, Matthew S., Fröhlich, Carla, Kozyreva, Alexandra, Hirschi, Raphael, & Yusof, Norhasliza, E-mail: msgilmer@ncsu.edu. Pair-instability Supernova Simulations: Progenitor Evolution, Explosion, and Light Curves. United States. doi:10.3847/1538-4357/AA8461.
Gilmer, Matthew S., Fröhlich, Carla, Kozyreva, Alexandra, Hirschi, Raphael, and Yusof, Norhasliza, E-mail: msgilmer@ncsu.edu. Sun . "Pair-instability Supernova Simulations: Progenitor Evolution, Explosion, and Light Curves". United States. doi:10.3847/1538-4357/AA8461.
@article{osti_22679876,
title = {Pair-instability Supernova Simulations: Progenitor Evolution, Explosion, and Light Curves},
author = {Gilmer, Matthew S. and Fröhlich, Carla and Kozyreva, Alexandra and Hirschi, Raphael and Yusof, Norhasliza, E-mail: msgilmer@ncsu.edu},
abstractNote = {In recent years, the viability of the pair-instability supernova (PISN) scenario for explaining superluminous supernovae has all but disappeared except for a few slowly-evolving examples. However, PISNe are not predicted to be superluminous throughout the bulk of their mass range. In fact, it is more likely that the first PISN we see (if we have not seen one already) will not be superluminous. Here, we present hydrodynamic simulations of PISNe for four stellar models with unique envelope properties spanning the PISN mass range. In addition, we compute synthetic light curves (LCs) for comparison with current and future observations. We also investigate, in the context of our most massive model, the prospect of mixing in the supernova ejecta, alleviating discrepancies between current PISN models and the remaining superluminous candidate events. To this end, we present the first published 3D hydrodynamic simulations of PISNe. After achieving convergence between 1D, 2D, and 3D simulations, we examine mixing in the supernova ejecta and its affect on the bolometric LC. We observe slight deviations from spherical symmetry, which increase with the number of dimensions. We find no significant effects on the bolometric LC; however, we conclude that mixing between the silicon and oxygen rich layers caused by the Rayleigh–Taylor instability may affect spectra.},
doi = {10.3847/1538-4357/AA8461},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 846,
place = {United States},
year = {2017},
month = {9}
}