Gravitational Radiation from Ultra High Energy Cosmic Rays in Models   with Large Extra Dimensions
  The effects of classical gravitational radiation in models with large extra dimensions are investigated for ultra high energy cosmic rays (CRs). The cross sections are implemented into a simulation package (SENECA) for high energy hadron induced CR air showers. We predict that gravitational radiation from quasi-elastic scattering could be observed at incident CR energies above $10^9$ GeV for a setting with more than two extra dimensions. It is further shown that this gravitational energy loss can alter the energy reconstruction for CR energies $E_{\rm CR}\ge 5\cdot 10^9$ GeV. 
Ben Koch, Hans-Joachim Drescher, Marcus Bleicher