JED solutions showing the impact of m_S and R_J on the high energy cutoff. Left panel: different JED solutions obtained keeping R_J to 40 R_G for different values of m_S. Right panel: different JED solutions are produced for different values of R_J, here expressed as r_J = R_J/R_G, and m_S fixed to 1.5. The plot is used to display how increasing both m_S and increasing R_J pushes the hard X-rays cutoff to higher energies.