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Fast evolving pair-instability supernova models: evolution, explosion, light curves

Kozyreva, Alexandra; Gilmer, Matthew; Hirschi, Raphael; Fröhlich, Carla; Blinnikov, Sergey; Wollaeger, Ryan T.; Noebauer, Ulrich M.; van Rossum, Daniel R.; Heger, Alexander; Even, Wesley P.; Waldman, Roni; Tolstov, Alexey; Chatzopoulos, Emmanouil; Sorokina, Elena

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Authors

Alexandra Kozyreva

Matthew Gilmer

Carla Fröhlich

Sergey Blinnikov

Ryan T. Wollaeger

Ulrich M. Noebauer

Daniel R. van Rossum

Alexander Heger

Wesley P. Even

Roni Waldman

Alexey Tolstov

Emmanouil Chatzopoulos

Elena Sorokina



Abstract

With an increasing number of superluminous supernovae (SLSNe) discovered, the question of their origin remains open and causes heated debates in the supernova community. Currently, there are three proposed mechanisms for SLSNe: (1) pair-instability supernovae (PISNe), (2) magnetar-driven supernovae and (3) models in which the supernova ejecta interacts with a circumstellar material ejected before the explosion. Based on current observations of SLSNe, the PISN origin has been disfavoured for a number of reasons. Many PISN models provide overly broad light curves and too reddened spectra, because of massive ejecta and a high amount of nickel. In the current study, we re-examine PISN properties using progenitor models computed with the GENEC code. We calculate supernova explosions with FLASH and light-curve evolution with the radiation hydrodynamics code STELLA. We find that high-mass models (200 and 250 M?) at relatively high metallicity (Z = 0.001) do not retain hydrogen in the outer layers and produce relatively fast evolving PISNe Type I and might be suitable to explain some SLSNe. We also investigate uncertainties in light-curve modelling due to codes, opacities, the nickel-bubble effect and progenitor structure and composition.

Journal Article Type Article
Acceptance Date Oct 5, 2016
Online Publication Date Oct 6, 2016
Publication Date Jan 1, 2017
Publicly Available Date May 26, 2023
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 464
Issue 3
Pages 2854-2865
DOI https://doi.org/10.1093/mnras/stw2562
Keywords radiative transfer, stars, evolution, massive, supernovae, general, indivdual, PTF12dam
Publisher URL http://mnras.oxfordjournals.org/content/464/3/2854

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