AUTHOR=Alhowaity Sawsan , Abouelmagd Elbaz I. , Diab Zouhair , Guirao Juan L. G. TITLE=Calculating periodic orbits of the Hénon–Heiles system JOURNAL=Frontiers in Astronomy and Space Sciences VOLUME=9 YEAR=2023 URL=https://www.frontiersin.org/journals/astronomy-and-space-sciences/articles/10.3389/fspas.2022.945236 DOI=10.3389/fspas.2022.945236 ISSN=2296-987X ABSTRACT=

This work is divided to two parts; the first part analyzes the features of Hénon–Heiles’s potential and finding the energy levels for bounded and unbounded motions. The critical points are explored in different phase spaces from the classical potential to the generalized one. In the second part, the possible solutions of the generalized (fifth-degree) Hénon–Heiles system are analyzed using the averaging theory. Two consequent transformations are used to set the Hamiltonian of this system in standard form for applying the averaging theory. In this context, eight solutions are found, where one of them is not convenient for the proposed assumptions, and the other seven solutions are proper and adequate to represent seven periodic orbits for the generalized Hénon–Heiles dynamical system, which has at least seven periodic orbits.