Fernández Jambrina, LeonardoGonzález Romero, Luis Manuel2023-06-202023-06-202004-03-150217-732310.1142/S0217732304013404https://hdl.handle.net/20.500.14352/51553© World Scientific Publishing Company. The present work has been supported by Dirección General de Enseñanza Superior Project PB98-0772. The authors wish to thank F.J. Chinea and F. Navarro-Lérida for valuable discussions.In this paper we analyse the possibility of constructing singularity-free inhomogeneous cosmological models with a pure radiation field as matter content. It is shown that the conditions for regularity are very easy to implement and therefore there is a huge number of such spacetimes.engjournal articlehttp://dx.doi.org/10.1142/S0217732304013404http://www.worldscientific.comhttp://arxiv.org/abs/gr-qc/0402124open access51-73Perfect-fluid solutionsGravitational collapseSingularitiesFísica-Modelos matemáticosFísica matemática