银河系亚结构与太阳和地球的高能中微子
Galactic Substructure and Energetic Neutrinos from the Sun and the Earth
摘要：
我们考虑了银河系亚结构对被太阳和地球捕获的弱相互作用大质量粒子（WIMPs）湮灭产生的高能中微子的影响。子结构引起随时间变化的俘获率，从而引起湮灭率随时间变化，并产生能量中微子通量。然而，在俘获率和湮灭率之间可能存在时滞。能量中微子流可能由太阳系过去轨道中的暗物质密度决定，而不是由局部密度决定。这种效应的特征可以从直接检测率与间接检测率的比值中寻找。
英文摘要：
We consider the effects of Galactic substructure on energetic neutrinos from annihilation of weakly-interacting massive particles (WIMPs) that have been captured by the Sun and Earth. Substructure gives rise to a time-varying capture rate and thus to time variation in the annihilation rate and resulting energetic-neutrino flux. However, there may be a time lag between the capture and annihilation rates. The energetic-neutrino flux may then be determined by the density of dark matter in the Solar System's past trajectory, rather than the local density. The signature of such an effect may be sought in the ratio of the direct- to indirect-detection rates.
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