Nonequilibrium corrections in the pressure tensor due to an energy flux
  The physical interpretation of the nonequilibrium corrections in the pressure tensor for radiation submitted to an energy flux obtained in some previous works is revisited. Such pressure tensor is shown to describe a moving equilibrium system but not a real nonequilibrium situation. 
Raquel Dominguez-Cascante and Jordi Faraudo (Departament de Fisica,   Universitat Autonoma de Barcelona, Bellaterra, Spain)