Dynamics of galactic disks in the nonaxisymmetric dark halo

Details Dynamics of galactic disks in the nonaxisymmetric dark halo Dynamics of galactic disks in the nonaxisymmetric dark halo

2010-07-14

arxiv.org/abs/1007.2298v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

15 pages, 12 figures, Proceedings of Conference <<Dynamics and evolution of disc galaxies>>, Pushchino, Moscow region, Russia,

Scientific paper

The results of numerical simulations of the dynamics of galactic disks, which are submerged into nonaxisymmetric dark massive halo are discussed. Galaxy disks dynamics in the nonaxisymmetric (triaxial) dark halo were investigated in detail by the high resolution numerical hydrodynamical methods (TVD \& SPH) and N-body models. The long-lived two arms spiral structure generates for a wide range of parameters. The spiral structure is global and number of turns can be 2-3 in depends of model parameters. Morphology and kinematics of spiral structures were investigated in depends of the halo and the disk parameters. The spiral structure rotates slowly and the angular velocity varies is quasiperiodic.

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