Simultaneous binary collisions in the planar four-body problem

Regina Martínez, Carles Simó

Research output: Contribution to journalArticleResearchpeer-review

13 Citations (Scopus)


We consider simultaneous binary collisions in the general planar four-body problem. We prove they are regularizable in the sense of continuity with respect to initial conditions using a blow-up of the singularity. Furthermore, numerical evidence is given that the differentiability of the regularization should be, in general, less than C8/3. As a simple example, the double isosceles four-body problem, displays that kind of behaviour.
Original languageEnglish
Pages (from-to)903-930
Issue number4
Publication statusPublished - 1 Jul 1999


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