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  X-Ray and Gamma-Ray emission from core-collapse supernovae: Comparison of three-dimensional neutrino-driven explosions with SN 1987A

Alp, D., Larsson, J., Maeda, K., Fransson, C., Wongwathanarat, A., Gabler, M., et al. (2019). X-Ray and Gamma-Ray emission from core-collapse supernovae: Comparison of three-dimensional neutrino-driven explosions with SN 1987A. The Astrophysical Journal, 882(1): 22. doi:10.3847/1538-4357/ab3395.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-BD15-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-BD16-F
Genre: Journal Article

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 Creators:
Alp, Dennis, Author
Larsson, Josefin, Author
Maeda, Keiichi, Author
Fransson, Claes, Author
Wongwathanarat, Annop1, Author              
Gabler, Michael, Author
Janka, Hans-Thomas1, Author              
Jerkstrand, Anders1, Author              
Heger, Alexander, Author
Menon, Athira, Author
Affiliations:
1Stellar Astrophysics, MPI for Astrophysics, Max Planck Society, ou_159882              

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 Abstract: During the first few hundred days after the explosion, core-collapse supernovae (SNe) emit down-scattered X-rays and gamma-rays originating from radioactive line emissions, primarily from the 56Ni→56Co→56Fe chain. We use supernova (SN) models based on three-dimensional neutrino-driven explosion simulations of single stars and mergers to compute this emission and compare the predictions with observations of SN 1987A. A number of models are clearly excluded, showing that high-energy emission is a powerful way of discriminating between models. The best models are almost consistent with the observations, but differences that cannot be matched by a suitable choice of viewing angle are evident. Therefore, our self-consistent models suggest that neutrino-driven explosions are able to produce, in principle, sufficient mixing, although remaining discrepancies may require small changes to the progenitor structures. The soft X-ray cutoff is primarily determined by the metallicity of the progenitor envelope. The main effect of asymmetries is to vary the flux level by a factor of ∼3. For the more asymmetric models, the shapes of the light curves also change. In addition to the models of SN 1987A, we investigate two models of SNe II-P and one model of a stripped-envelope SN IIb. The Type II-P models have observables similar to those of the models of SN 1987A, but the stripped-envelope SN model is significantly more luminous and evolves faster. Finally, we make simple predictions for future observations of nearby SNe.

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 Dates: 2019-08-28
 Publication Status: Published online
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 Identifiers: DOI: 10.3847/1538-4357/ab3395
Other: LOCALID: 3165933
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Title: The Astrophysical Journal
Source Genre: Journal
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Publ. Info: Bristol; Vienna : IOP Publishing; IAEA
Pages: - Volume / Issue: 882 (1) Sequence Number: 22 Start / End Page: - Identifier: ISSN: 0004-637X
CoNE: https://pure.mpg.de/cone/journals/resource/954922828215_3