Saha Equation in Rindler Space
  The Saha equations for photo-ionization process of hydrogen atoms and the creation of electron-positron pairs at high temperature are investigated in a reference frame undergoing a uniform accelerated motion in an otherwise flat Minkowski space-time geometry or equivalently, in a rest frame in presence of a strong uniform gravitational field. It is known as the Rindler space. 
Sanchari De and Somenath Chakrabarty
astro-ph.HE gr-qc hep-th quant-ph