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Effects of a New Triple-α Reaction Rate on the Helium Ignition of Accreting White Dwarfs
http://hdl.handle.net/2298/18119
http://hdl.handle.net/2298/181191fcd8d77-3c49-4fb9-ab18-b4204b4ef66f
名前 / ファイル | ライセンス | アクション |
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PR0013_255-260.pdf (1.4 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2011-02-25 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Effects of a New Triple-α Reaction Rate on the Helium Ignition of Accreting White Dwarfs | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ | departmental bulletin paper | |||||
著者 |
Saruwatari, Motoaki
× Saruwatari, Motoaki× Hashimoto, Masa-aki× 荒井, 賢三 |
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内容記述 | ||||||
内容記述 | Effects of a new rate of the triple-α reaction on the ignition of a carbon-oxygen white dwarf accreting helium in a binary system have been investigated. The ignition points determine the properties of a thermonuclear explosion of a Type Ia supernova (SNIa). We examine the evolutionary tracks of white dwarfs with various accretion rates and initial masses. It is found that for all cases from slow to intermediate accretion rates, nuclear burnings are ignited at the helium layers. As a consequence, carbon deflagration would be triggered for the lower accretion rate than dM/dt?4x10^-8 M_sun yr^-1 which has been believed to the lower limit of the accretion rate for the deflagration supernova. Furthermore, the off-center helium detonation dominates the mechanism of SNIa for intermediate and slow accretion rates. | |||||
書誌情報 |
en : Physics Reports of Kumamoto University 巻 13, 号 2, p. 255-260, 発行年 2010 |
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ISSN | ||||||
収録物識別子 | 0303-4070 | |||||
NCID | ||||||
収録物識別子 | AA00774081 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
日本十進分類法 | ||||||
主題 | 443.5 | |||||
出版者 | ||||||
言語 | ja | |||||
出版者 | 熊本大学 |