Illusory Flow in Radiation from Accelerating Charge
  In this paper we analyze the classical electromagnetic radiation of an accelerating point charge moving on a straight line trajectory. Depending on the duration of accelerations, rapidity distributions of photons emerge, resembling the ones obtained in the framework of hydrodynamical models by Landau or Bjorken. Detectable differences between our approach and spectra obtained from hydrodynamical models occur at high transverse momenta and are due to interference. 
Tamas S. Biro, Zsuzsanna Szendi (MTA WIGNER RCP, Budapest) and Zsolt   Schram (DTP Univ. Debrecen)
hep-ph nucl-th