text: /*! \mainpage EarthPhenom Package: simulating gamma-ray emission from the Earth source for LAT
  * 
  *
  * \author Keith Bechtol  bechtol@stanford.edu 
  *
  * @section introduction Introduction
  *
  * EarthPhenom is a package that simulates gamma-ray emission from the Earth.
  * The model contain two components:
  * - Earth limb region (nadir angles 50-70 deg)
  * - Inner Earth region (nadir angles < 50 deg)
  *
  * There are 3 parameters for each model, supplied in the source xml file:
  *
  * Scale - Scale factor for overall normalization ('1' corresponds to LAT-observed normalization)
  * EMin - Minimum simulated energy (Mev)
  * EMax - Maximum simulated energy (MeV)
  */
  
  