Abstract
The purpose of this article is to refine and complement the results obtained in Calogero et al. (Citation2010) on the dispersive behavior for solutions to the Vlasov-Poisson system in the stellar dynamics case. I will focus mainly on solutions that have zero energy in the center of mass system.
Acknowledgments
The author has been partially supported by the Spanish MEC and FEDER, project MTM2008-05271. The author wants to thank Simone Calogero and Oscar Sánchez for many useful comments, and also Juanjo Nieto for pointing out the counterexamples that we refer to in Remark 5.