RESONANT NEUTRINO OSCILLATIONS AND STELLAR COLLAPSE
RESONANT NEUTRINO OSCILLATIONS AND STELLAR COLLAPSE
复制标题
中微子共振振荡和恒星塌缩
DOI：
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发表时间：
1987
期刊：
影响因子：
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通讯作者：
D. Schramm
中科院分区：
文献类型：
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作者：
G. Fuller;R. Mayle;James R. Wilson;D. Schramm
在坍缩的前超新星恒星核中，如果存在大量不稳定的中微子与电子中微子混合，则中微子振荡的共振放大机制就会发生。相关的大质量中微子质量范围为200 eV ~ 25 keV，所需的真空混合角为0 > 10”6 rad。具有这些特征的中微子已被独立地提出用于解决一些星系形成问题，并由弱相互作用的家族子模型提出。结果表明，在恒星塌缩过程中，电子中微子会发生绝热转换，从而导致轻子数的重新调整和小熵的产生。这些变化对超新星的爆炸机制具有启示意义。
The Mikheyev-Smirnov-Wolfenstein mechanism for resonant amplification of neutrino oscillations is shown to occur in collapsing presupernova stellar cores if there exist massive unstable neutrinos which mix with the electron neutrino. The relevant massive neutrino mass range is 200 eV to 25 keV, and the required vacuum mixing angle is 0 > 10“ 6 rad. Neutrinos with these characteristics have been independently proposed to solve some galaxy formation problems and are suggested by familon models of the weak interaction. It is shown that adiabatic conversion of electron neutrinos into such massive neutrinos would occur during stellar collapse with resultant readjustment of lepton numbers and small entropy generation. These changes have implications for the supernova explosion mechanism.