Effects of the temperature dependence of the in-medium nucleon mass on core-collapse supernovae
Aims. A complete description of the core collapse supernova mechanism requires an appropriate treatment of both the hydrodynamics and the microphysics. We study the influence of a nuclear physics input, namely the temperature dependence of the nucleon effective mass in nuclei induced by the in-mediu...
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| Veröffentlicht in: | Astronomy and astrophysics (Berlin) 2012-05, Vol.541, p.A30 |
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| creator | Fantina, A. F. Blottiau, P. Margueron, J. Mellor, Ph Pizzochero, P. M. |
| description | Aims. A complete description of the core collapse supernova mechanism requires an appropriate treatment of both the hydrodynamics and the microphysics. We study the influence of a nuclear physics input, namely the temperature dependence of the nucleon effective mass in nuclei induced by the in-medium effects, in the core collapse of a massive star. Methods. We present here the first implementation of this nuclear input in a hydrodynamical one-dimensional simulation. The simulations are performed with a spherically symmetric Newtonian model, with neutrino transport treated in the multi-group flux-limited diffusion approximation. Results. The inclusion of the temperature dependence of the in-medium nucleon mass has an impact on the equation of state of the system and reduces the deleptonisation during the collapse. This results in a non-negligible effect on the shock wave energetics. The shock wave is formed more outwards, and in the first few milliseconds after bounce the shock front has propagated further out. |
| doi_str_mv | 10.1051/0004-6361/201118187 |
| format | Article |
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The inclusion of the temperature dependence of the in-medium nucleon mass has an impact on the equation of state of the system and reduces the deleptonisation during the collapse. This results in a non-negligible effect on the shock wave energetics. 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The simulations are performed with a spherically symmetric Newtonian model, with neutrino transport treated in the multi-group flux-limited diffusion approximation. Results. The inclusion of the temperature dependence of the in-medium nucleon mass has an impact on the equation of state of the system and reduces the deleptonisation during the collapse. This results in a non-negligible effect on the shock wave energetics. 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M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c398t-ecb1e2f9b8e0b0e83cef1e92ae730f0823ee67ce26c213425e51f0232f8ebcc83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Astronomy</topic><topic>Astrophysics</topic><topic>Earth, ocean, space</topic><topic>equation of state</topic><topic>Exact sciences and technology</topic><topic>hydrodynamics</topic><topic>methods: numerical</topic><topic>Nuclear Theory</topic><topic>Physics</topic><topic>Sciences of the Universe</topic><topic>Solar and Stellar Astrophysics</topic><topic>supernovae: general</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fantina, A. F.</creatorcontrib><creatorcontrib>Blottiau, P.</creatorcontrib><creatorcontrib>Margueron, J.</creatorcontrib><creatorcontrib>Mellor, Ph</creatorcontrib><creatorcontrib>Pizzochero, P. M.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Astronomy and astrophysics (Berlin)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fantina, A. F.</au><au>Blottiau, P.</au><au>Margueron, J.</au><au>Mellor, Ph</au><au>Pizzochero, P. M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of the temperature dependence of the in-medium nucleon mass on core-collapse supernovae</atitle><jtitle>Astronomy and astrophysics (Berlin)</jtitle><date>2012-05-01</date><risdate>2012</risdate><volume>541</volume><spage>A30</spage><pages>A30-</pages><issn>0004-6361</issn><eissn>1432-0746</eissn><eissn>1432-0756</eissn><coden>AAEJAF</coden><abstract>Aims. A complete description of the core collapse supernova mechanism requires an appropriate treatment of both the hydrodynamics and the microphysics. We study the influence of a nuclear physics input, namely the temperature dependence of the nucleon effective mass in nuclei induced by the in-medium effects, in the core collapse of a massive star. Methods. We present here the first implementation of this nuclear input in a hydrodynamical one-dimensional simulation. The simulations are performed with a spherically symmetric Newtonian model, with neutrino transport treated in the multi-group flux-limited diffusion approximation. Results. The inclusion of the temperature dependence of the in-medium nucleon mass has an impact on the equation of state of the system and reduces the deleptonisation during the collapse. This results in a non-negligible effect on the shock wave energetics. 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| source | Bacon EDP Sciences France Licence nationale-ISTEX-PS-Journals-PFISTEX; EDP Sciences; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Astronomy Astrophysics Earth, ocean, space equation of state Exact sciences and technology hydrodynamics methods: numerical Nuclear Theory Physics Sciences of the Universe Solar and Stellar Astrophysics supernovae: general |
| title | Effects of the temperature dependence of the in-medium nucleon mass on core-collapse supernovae |
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