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arXiv 0809.4703astro-phhep-ph
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中微子磁矩对大质量恒星演化的影响

The Impact of Neutrino Magnetic Moments on the Evolution of Massive Stars

Alexander Heger, Alexander Friedland, Maurizio Giannotti, Vincenzo Cirigliano

摘要:

我们探讨了大质量恒星对中微子磁矩的敏感性。我们发现,中微子磁矩引起的额外冷却对质量窗7 Msun < M < 18 Msun内的恒星结构和演化产生了质的变化,而不是简单地改变了燃烧的时间尺度。我们描述了这种修改后的演变的一些后果:在阈值质量的变化,创造核心坍缩超新星和氧-氖-镁白矮星和外观的一种新类型的超新星中,部分碳-氧核心爆炸的大质量恒星。由此产生的对磁矩的灵敏度在(2-4)* 10^{-11} μ B的水平。

英文摘要:

We explore the sensitivity of massive stars to neutrino magnetic moments. We find that the additional cooling due to the neutrino magnetic moments bring about qualitative changes to the structure and evolution of stars in the mass window 7 Msun < M < 18 Msun, rather than simply changing the time scales for the burning. We describe some of the consequences of this modified evolution: the shifts in the threshold masses for creating core-collapse supernovae and oxygen-neon-magnesium white dwarfs and the appearance of a new type of supernova in which a partial carbon-oxygen core explodes within a massive star. The resulting sensitivity to the magnetic moment is at the level of (2-4) * 10^{-11} μ_B.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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