Ara es mostren els items 1-20 de 24

    • Convexity and symmetry of central configurations in the five-body problem: Lagrange plus two 

      Barrabés Vera, Esther; Cors Iglesias, Josep Maria; Fernandes, Antonio Carlos; Vidal Díaz, Claudio (2021-07-10)
      Article
      Accés obert
      We study convexity and symmetry of central configurations in the five body problem when three of the masses ara located at the vertices of an equilateral triangle, that we call Lagrange plus two central configurations. ...
    • Dinàmica de varietats espacials: les autopistes de l’univers 

      Ollé Torner, Mercè; Barrabés Vera, Esther (2019-12-20)
      Article
      Accés obert
      En aquest article volem il.lustrar com la comprensió de la dinàmica d’alguns models de la mecànica celeste permet explicar alguns fenòmens astronòmics i dissenyar missions realistes a l’espai. El model paradigmàtic usat ...
    • Dynamical aspects of multi-round horseshoe-shaped homoclinic orbits in the RTBP 

      Ollé Torner, Mercè; Barrabés Vera, Esther (2009-11)
      Article
      Accés restringit per política de l'editorial
      We consider the planar restricted three-body problem and the collinear equilibrium point L3, as an example of a center×saddle equilibrium point in a Hamiltonian with two degrees of freedom.We explore numerically the ...
    • Dynamics of the parabolic restricted three-body problem 

      Barrabés Vera, Esther; Cors Iglesias, Josep Maria; Ollé Torner, Mercè (2015-12-01)
      Article
      Accés obert
      The main purpose of the paper is the study of the motion of a massless body attracted, under the Newton's law of gravitation, by two equal masses moving in parabolic orbits all over in the same plane, the planar parabolic ...
    • Ejection-collision orbits in the symmetric collinear four–body problem 

      Álvarez Ramírez, Martha; Barrabés Vera, Esther; Medina, M.; Ollé Torner, Mercè (2019-06-15)
      Article
      Accés obert
      In this paper, we consider the collinear symmetric four-body problem, where four masses and a¿>¿0, are aligned in this order and move symmetrically about their center of mass. We introduce regularized variables to deal ...
    • Ejection–collision orbits in two degrees of freedom problems in celestial mechanics 

      Alvarez Ramírez, Martha; Barrabés Vera, Esther; Medina, M.; Ollé Torner, Mercè (Springer Nature, 2021-08-01)
      Article
      Accés obert
      In a general setting of a Hamiltonian system with two degrees of freedom and assuming some properties for the undergoing potential, we study the dynamics close and tending to a singularity of the system which in models of ...
    • Fast numerical computation of Lissajous and quasi-halo libration point trajectories 

      Mondelo, Josep Maria; Barrabés Vera, Esther; Gómez Muntané, Gerard; Ollé Torner, Mercè (2012)
      Text en actes de congrés
      Accés obert
      In this paper we present a methodology for the automatic generation of quasi–periodic libration point trajectories (Lissajous and quasi–halo) of the Spatial, Circular Restricted Three–Body Problem. This methodology is ...
    • HAmsys 2014 

      Ollé Torner, Mercè; Barrabés Vera, Esther; Gómez Muntané, Gerard; Mondelo González, José María (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this talk we give an explanation of transport in the solar system based in dynamical systems theory. More concretely we consider (as a first approximation) different bicircular problems (i.e. Sun, Jupiter, a planet ...
    • Highly eccentric hip-hop solutions of the 2N-body problem 

      Barrabés Vera, Esther; Cors Iglesias, Josep Maria; Pinyol Pérez, Conxita; Soler Villanueva, Jaume (2010-02)
      Article
      Accés obert
      We show the existence of families of hip-hop solutions in the equal-mass 2N-body problem which are close to highly eccentric planar elliptic homographic motions of 2N bodies plus small perpendicular non-harmonic oscillations. ...
    • Hip-hop solutions of the 2N-body problem 

      Barrabés Vera, Esther; Cors Iglesias, Josep Maria; Pinyol Pérez, Conxita; Soler Villanueva, Jaume (2006-09)
      Article
      Accés obert
      Hip–Hop solutions of the 2N–body problem with equal masses are shown to exist using an analytic continuation argument. These solutions are close to planar regular 2N–gon relative equilibria with small vertical oscillations. ...
    • Horseshoe motion in the Restricted three-body problem 

      Ollé Torner, Mercè; Barrabés Vera, Esther (2005-09)
      Article
      Accés obert
    • Invariant manifolds of L_3 and horseshoe motion in the restricted three-body problem 

      Barrabés Vera, Esther; Ollé Torner, Mercè (2005)
      Article
      Accés obert
      In this paper, we consider horseshoe motion in the planar restricted three-body problem. On one hand, we deal with the families of horseshoe periodic orbits (which surround three equilibrium points called L3, L4 and L5), ...
    • J2 effect and elliptic inclined periodic orbits in the collision three-body problem 

      Barrabés Vera, Esther; Cors Iglesias, Josep Maria; Pinyol Pérez, Conxita; Soler Villanueva, Jaume (2008-01)
      Article
      Accés obert
      The existence of a new class of inclined periodic orbits of the collision restricted three{body problem is shown. The symmetric periodic solutions found are perturbations of elliptic kepler orbits and they exist only for ...
    • Low‐cost trajectories using dynamical systems 

      Cors Iglesias, Josep Maria; Barrabés Vera, Esther (Escola Politècnica Superior d’Enginyeria de Manresa, 2010-12-02)
      Comunicació de congrés
      Accés obert
    • Numerical continuation of families of homoclinic connections of periodic orbits in the RTBP 

      Ollé Torner, Mercè; Barrabés Vera, Esther; Mondelo González, José María (2009-12)
      Article
      Accés restringit per política de l'editorial
      The goal of this paper is the numerical computation and continuation of homoclinic connections of the Lyapunov families of periodic orbits (p.o.) associated with the collinear equilibrium points, L1, L2 and L3, of ...
    • Numerical exploration of the limit ring problem 

      Barrabés Vera, Esther; Cors Iglesias, Josep Maria; Hall, G.R. (2013-04)
      Article
      Accés obert
      The aim of this work is to provide an insight of an idealized model of a planetary ring. The model is a limit case of the planar circular restricted 1 + n body problem, where an infinitesimal particle moves under the ...
    • On central configurations of the kn-body problem 

      Barrabés Vera, Esther; Cors Iglesias, Josep Maria (2019-08-15)
      Article
      Accés obert
      We consider planar central configurations of the Newtonian kn-body problem consisting in k groups of regular n-gons of equal masses, called (k, n)-crown. We derive the equations of central configurations for a general (k, ...
    • On strictly convex central configurations of the 2n-body problem 

      Barrabés Vera, Esther; Cors Iglesias, Josep Maria (2019-12-01)
      Article
      Accés obert
      We consider planar central configurations of the Newtonian 2n-body problem consisting in two twisted regular n-gons of equal masses. We prove the conjecture that for n=5 all convex central configurations of two twisted ...
    • Phase space structure of the hydrogen atom in a circularly polarized microwave field 

      Barrabés Vera, Esther; Ollé Torner, Mercè; Borondo Rodríguez, Florentino; Farrelly, David; Mondelo González, José María (2012-02)
      Article
      Accés restringit per política de l'editorial
      We consider the problem of the hydrogen atom interacting with a circularly polarized microwave field, modeled as a perturbed Kepler problem. A remarkable feature of this system is that the electron can follow what we term ...
    • Phase space structure of the hydrogen atom in a circularly polarized microwave field 

      Barrabés Vera, Esther; Ollé Torner, Mercè; Borondo Rodríguez, Florentino; Farrelly, David; Mondelo González, José María (2011-10)
      Report de recerca
      Accés obert
      We consider the problem of the hydrogen atom interacting with a circularly polarized microwave field, modeled as a perturbed Kepler problem.