论文标题
局部气泡中宇宙射线相互作用的高能中微子
High-energy neutrinos from cosmic ray interactions in the Local Bubble
论文作者
论文摘要
Icecube实验发现了令人惊讶的大量外星高能中微子通量。虽然能量$ e> 100 $ e tev的muon中微子的通量与Fermi-lat确定的外层伽马射线背景（EBL）是一致的，但$ e <100 $ e <100 $ tev的cascaded中微子通量的柔和组件比预期的要大。此外，在Fermi-Lat的数据中发现了Energies $ e> 300 $ GEV的高银河纬度的伽马射线过量。 TEV Energies的伽马射线过量和$ e <100 $ TEV的中微子过量可能具有共同的银河系。在这项工作中，我们研究了这两种过量的可能性都是由宇宙射线（CRS）与局部气泡壁上的PEV相互作用引起的。这些CR的来源可能是最近附近的Vela，例如Vela。我们表明，这种情况可以解释膝盖周围观察到的CR通量，而气泡壁上的CR相互作用可以产生观察到的天体高能中微子中微子的大部分，低于$ \ sim {\ rm dim} \少数} \ times times times times 100 $ 100 $ tev。
A surprisingly large flux of extraterrestrial high-energy neutrinos was discovered by the IceCube experiment. While the flux of muon neutrinos with energies $E>100$ TeV is consistent with the extragalactic gamma-ray background (EBL) determined by Fermi-LAT, the softer component of the cascade neutrino flux at $E<100$ TeV is larger than expected. Moreover, a gamma-ray excess at high Galactic latitudes at energies $E>300$ GeV was found in the data of Fermi-LAT. The gamma-ray excess at TeV energies and the neutrino excess at $E<100$ TeV may have a common Galactic origin. In this work, we study the possibility that both excesses are caused by interactions of cosmic rays (CRs) with energies up to PeV in the wall of the Local Bubble. Source of these CRs may be a recent nearby source like Vela. We show that such a scenario can explain the observed CR flux around the knee, while CR interactions in the bubble wall can generate a substantial fraction of the observed astrophysical high-energy neutrino flux below $\sim {\rm few} \times 100$ TeV.
