论文标题
从折叠纹理中的宇宙射线和光谱扭曲
Cosmic Rays and Spectral Distortions from Collapsing Textures
论文作者
论文摘要
我们计算通过放松宇宙纹理的缩放分布而产生的光子和中微子的能量光谱，并讨论对高能宇宙射线光谱以及CMB光谱扭曲的含义。纹理导致对光子通量的贡献，该光通量缩放为$ e^3 f（e）\ sim e^{3/2} $。因此，纹理模型上最严格的约束来自最高能量，原始光子可以从中可以到达我们而不会被CMB和其他前景散布。纹理导致$μ$类型和$ y $类型的扭曲。虽然来自当前COBE界限的纹理模型的约束比CMB的角功率谱的边界弱，但像Pixie等未来调查可以导致更强的界限。高能量中微子通量受到皮埃尔螺旋钻实验的数据的约束，并在质地的能量尺度上产生与CMB边界竞争的能量尺度。
We compute the energy spectrum of photons and neutrinos produced by the unwinding of a scaling distribution of cosmic textures, and discuss the implications for the spectrum of high energy cosmic rays, and for CMB spectral distortions. Textures lead to a contribution to the photon flux which scales as $E^3 F(E) \sim E^{3/2}$. Hence, the tightest constraints on the texture model come from the highest energies from which primordial photons can reach us without being scattered by the CMB and other foregrounds. Textures lead to both $μ$ type and $y$ type distortions. While the constraints on the texture model coming from the current COBE bounds are weaker than the bounds from the angular power spectrum of the CMB, future surveys such as PIXIE can lead to stronger bounds. The high energy neutrino flux is constrained by data from the Pierre Auger experiment and yields a bound on the energy scale of textures which is competitive with CMB bounds.
