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X-Ray and Gamma-Ray...
X-Ray and Gamma-Ray Emission from Core-collapse Supernovae : Comparison of Three-dimensional Neutrino-driven Explosions with SN 1987A
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- Alp, Dennis, MSc, 1992- (författare)
- KTH,Partikel- och astropartikelfysik,The Oskar Klein Centre, AlbaNova, SE-106 91 Stockholm, Sweden
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- Larsson, Josefin (författare)
- KTH,Partikel- och astropartikelfysik,The Oskar Klein Centre, AlbaNova, SE-106 91 Stockholm, Sweden
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- Maeda, Keiichi (författare)
- Kyoto Univ, Dept Astron, Sakyo Ku, Kitashirakawa Oiwake Cho, Kyoto 6068502, Japan.
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- Fransson, Claes (författare)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm Univ, Oskar Klein Ctr, Dept Astron, AlbaNova, SE-10691 Stockholm, Sweden.
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- Wongwathanarat, Annop (författare)
- Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85748 Garching, Germany.
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- Gabler, Michael (författare)
- Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85748 Garching, Germany.
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- Janka, Hans-Thomas (författare)
- Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85748 Garching, Germany.
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- Jerkstrand, Anders (författare)
- Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85748 Garching, Germany.
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- Heger, Alexander (författare)
- Monash Univ, Monash Ctr Astrophys, Sch Phys & Astron, Clayton, Vic 3800, Australia.;Tsung Dao Lee Inst, Shanghai 200240, Peoples R China.
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- Menon, Athira (författare)
- Univ Amsterdam, Anton Pannekoek Inst Astron, NL-1090 GE Amsterdam, Netherlands.
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(creator_code:org_t)
- 2019-08-28
- 2019
- Engelska.
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Ingår i: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 882:1
- Relaterad länk:
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https://ui.adsabs.ha...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- 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 Ni-56 -> Co-56 -> Fe-56 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 similar to 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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Alp, Dennis, MSc ...
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Larsson, Josefin
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Maeda, Keiichi
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Fransson, Claes
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Wongwathanarat, ...
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Gabler, Michael
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Janka, Hans-Thom ...
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Jerkstrand, Ande ...
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Heger, Alexander
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Menon, Athira
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