Cosmic Rays and Spectral Distortions from Collapsing Textures
  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.
