Matter mixing in core-collapse supernova ejecta : large density perturbations in the progenitor star?

2015
journal article
article
13
cris.lastimport.wos2024-04-09T22:38:22Z
dc.abstract.enMatter mixing is one important topic in the study of core-collapse supernova (CCSN) explosions. In this paper, we perform two-dimensional hydrodynamic simulations to reproduce the high velocity ^{56} Ni clumps observed in SN 1987A. This is the first time that large density perturbation is proposed in the CCSN progenitor to generate Rayleigh–Taylor (RT) instability and make the effective matter mixing. In the case of a spherical explosion, RT instability is efficient at both C+O/He and He/H interfaces of the SN progenitor. Radial coherent structures shown in perturbation patterns are important for obtaining high velocity ^{56} Ni clumps. We can also obtain matter mixing features and high velocity ^{56} Ni clumps in some cases of aspherical explosion. We find that one of the most favorable models in our work has a combination of bipolar and equatorially asymmetric explosions in which at least 25% of density perturbation is introduced at different composition interfaces of the CCSN progenitor. These simulation results are comparable to the observational findings of SN 1987A.pl
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomicznepl
dc.contributor.authorMao, Jirongpl
dc.contributor.authorOno, Masaomipl
dc.contributor.authorNagataki, Shigehiropl
dc.contributor.authorHashimoto, Masa-akipl
dc.contributor.authorIto, Hirotakapl
dc.contributor.authorMatsumoto, Jinpl
dc.contributor.authorDainotti, Maria - 174440 pl
dc.contributor.authorLee, Shiu-Hangpl
dc.date.accessioned2015-11-19T14:02:00Z
dc.date.available2015-11-19T14:02:00Z
dc.date.issued2015pl
dc.date.openaccess12
dc.description.accesstimepo opublikowaniu
dc.description.number2pl
dc.description.versionostateczna wersja wydawcy
dc.description.volume808pl
dc.identifier.articleid164pl
dc.identifier.doi10.1088/0004-637X/808/2/164pl
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/16941
dc.languageengpl
dc.language.containerengpl
dc.rightsDodaję tylko opis bibliograficzny*
dc.rights.licenceInna otwarta licencja
dc.rights.uri*
dc.share.typeotwarte czasopismo
dc.subject.enhydrodynamicspl
dc.subject.eninstabilitiespl
dc.subject.ennuclear reactionspl
dc.subject.ennucleosynthesispl
dc.subject.enabundancespl
dc.subject.ensupernovae: generalpl
dc.subtypeArticlepl
dc.titleMatter mixing in core-collapse supernova ejecta : large density perturbations in the progenitor star?pl
dc.title.journalThe Astrophysical Journalpl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-09T22:38:22Z
dc.abstract.enpl
Matter mixing is one important topic in the study of core-collapse supernova (CCSN) explosions. In this paper, we perform two-dimensional hydrodynamic simulations to reproduce the high velocity ^{56} Ni clumps observed in SN 1987A. This is the first time that large density perturbation is proposed in the CCSN progenitor to generate Rayleigh–Taylor (RT) instability and make the effective matter mixing. In the case of a spherical explosion, RT instability is efficient at both C+O/He and He/H interfaces of the SN progenitor. Radial coherent structures shown in perturbation patterns are important for obtaining high velocity ^{56} Ni clumps. We can also obtain matter mixing features and high velocity ^{56} Ni clumps in some cases of aspherical explosion. We find that one of the most favorable models in our work has a combination of bipolar and equatorially asymmetric explosions in which at least 25% of density perturbation is introduced at different composition interfaces of the CCSN progenitor. These simulation results are comparable to the observational findings of SN 1987A.
dc.affiliationpl
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne
dc.contributor.authorpl
Mao, Jirong
dc.contributor.authorpl
Ono, Masaomi
dc.contributor.authorpl
Nagataki, Shigehiro
dc.contributor.authorpl
Hashimoto, Masa-aki
dc.contributor.authorpl
Ito, Hirotaka
dc.contributor.authorpl
Matsumoto, Jin
dc.contributor.authorpl
Dainotti, Maria - 174440
dc.contributor.authorpl
Lee, Shiu-Hang
dc.date.accessioned
2015-11-19T14:02:00Z
dc.date.available
2015-11-19T14:02:00Z
dc.date.issuedpl
2015
dc.date.openaccess
12
dc.description.accesstime
po opublikowaniu
dc.description.numberpl
2
dc.description.version
ostateczna wersja wydawcy
dc.description.volumepl
808
dc.identifier.articleidpl
164
dc.identifier.doipl
10.1088/0004-637X/808/2/164
dc.identifier.eissn
1538-4357
dc.identifier.issn
0004-637X
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/16941
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Dodaję tylko opis bibliograficzny
dc.rights.licence
Inna otwarta licencja
dc.rights.uri*
dc.share.type
otwarte czasopismo
dc.subject.enpl
hydrodynamics
dc.subject.enpl
instabilities
dc.subject.enpl
nuclear reactions
dc.subject.enpl
nucleosynthesis
dc.subject.enpl
abundances
dc.subject.enpl
supernovae: general
dc.subtypepl
Article
dc.titlepl
Matter mixing in core-collapse supernova ejecta : large density perturbations in the progenitor star?
dc.title.journalpl
The Astrophysical Journal
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

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