Order and Chaos in a Three-dimensional Binary System of Interacting Galaxies

Abstract

In the present article, we present a galactic gravitational model of three degrees of freedom, in order to investigate and reveal the behavior of orbits in a binary quasar system. The two quasars are hosted in a pair of interacting disk galaxies. We study in detail the regular or chaotic character of motion, in two different cases: the time independent model in both 2D and 3D dynamical systems and the evolving 3D model. Our numerical calculations, indicate that a large fraction of orbits in the 2D system are chaotic in the time independent case. A careful analysis suggest that several Lindblad resonances are also responsible for the chaotic motion of stars in both hosts galaxies. In the time dependent system, we follow the evolution of 3D orbits in our dynamical model, as the two interacting host galaxies develop dense and massive quasars in their cores, by mass transportation from the disks to their nuclei. In this interesting case, there are orbits that change their orbital character from regular to chaotic and vise versa and also orbits that maintain their character during the galactic evolution. These results strongly indicate that the ordered or chaotic nature of 3D orbits depends, not only in the galactic interaction but also in the presence of the quasars in the galactic cores of the host galaxies. The outcomes derived from our dynamical model are compared with observational data. Some theoretical arguments to support the numerically derived outcomes are presented, both in 2D and 3D systems, while a comparison with similar earlier work is also made.

Published in the Astrophysical Journal (ApJ)

References in corpus (12)

• A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity
• Evidence for Quasar Activity Triggered by Galaxy Mergers in HST Observations of Dust-reddened Quasars
• Evidence for Merger Remnants in Early-Type Host Galaxies of Low-Redshift QSOs
• The host galaxies of luminous quasars
• Hubble Space Telescope H-Band Imaging Survey of Massive Gas-Rich Mergers
• The Co-Formation of Spheroids and Quasars Traced in their Clustering
• Near Infrared Adaptive Optics Imaging of QSO Host Galaxies
• On-axis spectroscopy of the host galaxies of 20 optically luminous quasars at z~0.3
• A new dynamical model for the study of galactic structure
• Host Galaxies of Luminous Quasars: Structural Properties and the Fundamental Plane
• The evolution of chaos in active galaxy models with an oblate or a prolate dark halo component
• Chaotic orbits in a 3D galactic dynamical model with a double nucleus

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• Distinguishing between order and chaos in a simple barred galaxy model
• Escape dynamics in a binary system of interacting galaxies
• Fractal basins of attraction in a binary quasar model
• Determining the nature of orbits in a three-dimensional galaxy model hosting a BL Lacertae object
• Construction of second-order six-dimensional Hamiltonian-conserving scheme