论文标题
来自宇宙弦的高能天体中微子
High-Energy Astrophysical Neutrinos from Cosmic Strings
论文作者
论文摘要
夫妇到中微子的宇宙弦可能是Icecube看到的高能天体中微子（hean）通量的一部分。在这里，我们计算出从包含准cusps，-kinks或扭结碰撞的宇宙弦乐环中发出的中微子的观察到的中微子。我们考虑了两个宽阔的中微子发射模型：一个这些弦直接发出中微子，其中一个散发出一个标量粒子，然后最终腐烂到中微子。无论哪种情况，宇宙弦中微子的光谱都不匹配观察到的Hean光谱。因此，我们发现，通过这两种情况，宇宙弦乐中微子的最大贡献最多是$ \ sim 45 $ 45 $ 45 $％。但是，我们还发现，宇宙弦中微子的存在可能导致观察到的中微子谱中的凸起。最后，对于所介绍的每个模型，我们提供了中微子发射的可行参数空间。
Cosmic strings that couple to neutrinos may account for a portion of the high-energy astrophysical neutrino (HEAN) flux seen by IceCube. Here, we calculate the observed spectrum of neutrinos emitted from a population of cosmic string loops that contain quasi-cusps, -kinks, or kink-kink collisions. We consider two broad neutrino emission models: one where these string features emit a neutrino directly, and one where they emit a scalar particle which then eventually decays to a neutrino. In either case, the spectrum of cosmic string neutrinos does not match that of the observed HEAN spectrum. We thus find that the maximum contribution of cosmic string neutrinos, through these two scenarios, to be at most $\sim 45$ % of the observed flux. However, we also find that the presence of cosmic string neutrinos can lead to bumps in the observed neutrino spectrum. Finally, for each of the models presented, we present the viable parameter space for neutrino emission.
