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 $\mu$ 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.

中文翻译：

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宇宙射线和来自折叠纹理的光谱失真

我们计算了由宇宙纹理的缩放分布展开产生的光子和中微子的能谱，并讨论了对高能宇宙射线光谱和 CMB 光谱失真的影响。纹理导致对光子通量的贡献，其比例为 $E^3 F(E) \sim E^{3/2}$。因此，对纹理模型最严格的限制来自原始光子可以到达我们而不会被 CMB 和其他前景散射的最高能量。纹理会导致 $\mu$ 类型和 $y$ 类型的扭曲。虽然来自当前 COBE 边界的纹理模型约束弱于来自 CMB 角功率谱的边界，但未来的调查（如 PIXIE）可能会导致更强的边界。