The Predicted Signature of Neutrino Emission in Observations of Pulsating Pre-White Dwarf Stars
The Predicted Signature of Neutrino Emission in Observations of Pulsating Pre-White Dwarf Stars
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DOI：
10.1086/309216
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发表时间：
2000-03
期刊：
影响因子：
--
通讯作者：
M. O'Brien;S. Kawaler
中科院分区：
文献类型：
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作者：
M. O'Brien;S. Kawaler
前白矮星（PWD）演化可能是由核心中微子发射引起的能量损失驱动的。与太阳中微子通量不同，这不是核聚变的副产品，而是 PWD 核心高温致密区域电子散射过程的结果。我们表明，观测到的冷 PWD 脉动器的周期变化率将限制其核心的中微子发射，并且我们确定了未来观测的适当目标。这样的测量将告诉我们轻子相互作用理论是否正确地描述了 PWD 演化的产生速率以及中微子冷却。这将代表标准轻子理论在致密等离子体中的首次测试。
Pre-white dwarf (PWD) evolution can be driven by energy losses caused by neutrino emission in the core. Unlike the solar neutrino flux, this is not the by-product of nuclear fusion but is instead the result of electron-scattering processes in the hot, dense regions of the PWD core. We show that the observed rate of period change in cool PWD pulsators will constrain neutrino emission in their cores, and we identify appropriate targets for future observation. Such a measurement will tell us whether the theories of lepton interactions correctly describe the production rates and therefore neutrino cooling of PWD evolution. This would represent the first test of standard lepton theory in dense plasma.