Production of 44Ti in neutrino-driven aspherical supernova explosions
We examine the synthesis of 44Ti in a neutrino-driven aspherical supernova (SN), focusing on reaction rates related to 44Ti and rotation of a progenitor. We have performed 2D hydrodynamic simulations of SN of a 15M⊙ progenitor, whose angular velocity is manually set to be a cylindrical distribution...
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| creator | Fujimoto Shin-ichiro Ono Masaomi Hashimoto Masa-aki Kotake Kei |
| description | We examine the synthesis of 44Ti in a neutrino-driven aspherical supernova (SN), focusing on reaction rates related to 44Ti and rotation of a progenitor. We have performed 2D hydrodynamic simulations of SN of a 15M⊙ progenitor, whose angular velocity is manually set to be a cylindrical distribution and have followed explosive nucleosynthesis in the ejecta. We find that the faster rates of 40Ca(α,γ)44Ti and the slower rate of 44Ti(α,p)47V lead to more massive ejection of 44Ti and 56Ni and larger ratios . Faster rotation also results in more massive ejection of 44Ti and 56Ni. Ratios are however independent from rotation. Large masses of 44Ti and large ratios observed in SN 1987A and Cas A (> 1O−4M⊙ and 1-2 respectively) are not realized in all the models. |
| doi_str_mv | 10.1063/1.4874085 |
| format | Conference Proceeding |
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We have performed 2D hydrodynamic simulations of SN of a 15M⊙ progenitor, whose angular velocity is manually set to be a cylindrical distribution and have followed explosive nucleosynthesis in the ejecta. We find that the faster rates of 40Ca(α,γ)44Ti and the slower rate of 44Ti(α,p)47V lead to more massive ejection of 44Ti and 56Ni and larger ratios <44Ti/56Ni>. Faster rotation also results in more massive ejection of 44Ti and 56Ni. Ratios <44Ti/56Ni> are however independent from rotation. Large masses of 44Ti and large ratios <Ti/56Ni> observed in SN 1987A and Cas A (> 1O−4M⊙ and 1-2 respectively) are not realized in all the models.</description><identifier>ISSN: 0094-243X</identifier><identifier>EISSN: 1551-7616</identifier><identifier>DOI: 10.1063/1.4874085</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Angular velocity ; Calcium isotopes ; Chemical synthesis ; Computer simulation ; Ejecta ; Ejection ; Explosions ; Neutrinos ; Nuclear fusion ; Rotation</subject><ispartof>AIP conference proceedings, 2014, Vol.1594 (1), p.300</ispartof><rights>2014 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>309,310,776,780,785,786,23910,23911,25119,27904</link.rule.ids></links><search><creatorcontrib>Fujimoto Shin-ichiro</creatorcontrib><creatorcontrib>Ono Masaomi</creatorcontrib><creatorcontrib>Hashimoto Masa-aki</creatorcontrib><creatorcontrib>Kotake Kei</creatorcontrib><title>Production of 44Ti in neutrino-driven aspherical supernova explosions</title><title>AIP conference proceedings</title><description>We examine the synthesis of 44Ti in a neutrino-driven aspherical supernova (SN), focusing on reaction rates related to 44Ti and rotation of a progenitor. We have performed 2D hydrodynamic simulations of SN of a 15M⊙ progenitor, whose angular velocity is manually set to be a cylindrical distribution and have followed explosive nucleosynthesis in the ejecta. We find that the faster rates of 40Ca(α,γ)44Ti and the slower rate of 44Ti(α,p)47V lead to more massive ejection of 44Ti and 56Ni and larger ratios <44Ti/56Ni>. Faster rotation also results in more massive ejection of 44Ti and 56Ni. Ratios <44Ti/56Ni> are however independent from rotation. Large masses of 44Ti and large ratios <Ti/56Ni> observed in SN 1987A and Cas A (> 1O−4M⊙ and 1-2 respectively) are not realized in all the models.</description><subject>Angular velocity</subject><subject>Calcium isotopes</subject><subject>Chemical synthesis</subject><subject>Computer simulation</subject><subject>Ejecta</subject><subject>Ejection</subject><subject>Explosions</subject><subject>Neutrinos</subject><subject>Nuclear fusion</subject><subject>Rotation</subject><issn>0094-243X</issn><issn>1551-7616</issn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2014</creationdate><recordtype>conference_proceeding</recordtype><recordid>eNotjcFKAzEUAIMouFYP_kHAc-p7STbJHqVUKxT0UMFbySZZTCnJmuwWP9-CnuY0M4TcIywRlHjEpTRagmkvSINti0wrVJekAegk41J8XpObWg8AvNPaNGT9XrKf3RRzonmgUu4ijYmmME8lpsx8iaeQqK3jVyjR2SOt8xhKyidLw894zPVs1ltyNdhjDXf_XJCP5_VutWHbt5fX1dOWjSjNxJQA4bky1jpnnNWIIDQMPQRuW29FkChVr7wxwXa854PsApfKI_SoeqfEgjz8dceSv-dQp_0hzyWdl3uOXCsN2ijxC2z2TDY</recordid><startdate>20140502</startdate><enddate>20140502</enddate><creator>Fujimoto Shin-ichiro</creator><creator>Ono Masaomi</creator><creator>Hashimoto Masa-aki</creator><creator>Kotake Kei</creator><general>American Institute of Physics</general><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20140502</creationdate><title>Production of 44Ti in neutrino-driven aspherical supernova explosions</title><author>Fujimoto Shin-ichiro ; Ono Masaomi ; Hashimoto Masa-aki ; Kotake Kei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p148t-6303d268aacc8ca7110370fb0e2a5da3e4146b6d88ea92b2f49e246d10b16bc63</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Angular velocity</topic><topic>Calcium isotopes</topic><topic>Chemical synthesis</topic><topic>Computer simulation</topic><topic>Ejecta</topic><topic>Ejection</topic><topic>Explosions</topic><topic>Neutrinos</topic><topic>Nuclear fusion</topic><topic>Rotation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fujimoto Shin-ichiro</creatorcontrib><creatorcontrib>Ono Masaomi</creatorcontrib><creatorcontrib>Hashimoto Masa-aki</creatorcontrib><creatorcontrib>Kotake Kei</creatorcontrib><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fujimoto Shin-ichiro</au><au>Ono Masaomi</au><au>Hashimoto Masa-aki</au><au>Kotake Kei</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Production of 44Ti in neutrino-driven aspherical supernova explosions</atitle><btitle>AIP conference proceedings</btitle><date>2014-05-02</date><risdate>2014</risdate><volume>1594</volume><issue>1</issue><epage>300</epage><issn>0094-243X</issn><eissn>1551-7616</eissn><abstract>We examine the synthesis of 44Ti in a neutrino-driven aspherical supernova (SN), focusing on reaction rates related to 44Ti and rotation of a progenitor. We have performed 2D hydrodynamic simulations of SN of a 15M⊙ progenitor, whose angular velocity is manually set to be a cylindrical distribution and have followed explosive nucleosynthesis in the ejecta. We find that the faster rates of 40Ca(α,γ)44Ti and the slower rate of 44Ti(α,p)47V lead to more massive ejection of 44Ti and 56Ni and larger ratios <44Ti/56Ni>. Faster rotation also results in more massive ejection of 44Ti and 56Ni. Ratios <44Ti/56Ni> are however independent from rotation. Large masses of 44Ti and large ratios <Ti/56Ni> observed in SN 1987A and Cas A (> 1O−4M⊙ and 1-2 respectively) are not realized in all the models.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4874085</doi><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
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| ispartof | AIP conference proceedings, 2014, Vol.1594 (1), p.300 |
| issn | 0094-243X 1551-7616 |
| language | eng |
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| source | AIP Journals Complete |
| subjects | Angular velocity Calcium isotopes Chemical synthesis Computer simulation Ejecta Ejection Explosions Neutrinos Nuclear fusion Rotation |
| title | Production of 44Ti in neutrino-driven aspherical supernova explosions |
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