Cosmic neutrino last scattering surface.
Cosmic neutrino last scattering surface.
复制标题
宇宙中微子最后的散射表面。
DOI：
10.1103/physrevlett.103.171301
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发表时间：
2009
影响因子：
8.6
通讯作者：
Mika Vesterinen
中科院分区：
文献类型：
--
作者：
S. Dodelson;Mika Vesterinen
当宇宙年龄小于1秒时，中微子就与宇宙等离子体的其余部分解耦，这远比光子早得多，光子在宇宙年龄为38万年时解耦。然而，令人惊讶的是，大质量中微子的最后散射面比光子的最后散射面离我们近得多。在此，我们计算三种中微子的最后散射面的特性。
Neutrinos decoupled from the rest of the cosmic plasma when the Universe was less than one second old, far earlier than the photons, which decoupled at t = 380,000 years. Surprisingly, though, the last scattering surface of massive neutrinos is much closer to us than that of the photons. Here we calculate the properties of the last scattering surfaces of the three species of neutrinos.