Korolev V.V., Eremin M.A., Bochenkov D.O., Marchenko P.P. Stochastic Models of the Vertical Structure of Turbulent Gaseous Disks of Galaxies

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https://doi.org/10.15688/mpcm.jvolsu.2017.6.7

Vitaliy Vladimirovich Korolev
Candidate of Physical and Mathematical Sciences,
Associate Professor, Department of Theoretical Physics and Wave Phenomena,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation

Mikhail Anatolyevich  Eremin
Candidate of Physical and Mathematical Sciences,
Associate Professor, Department of Theoretical Physics and Wave Phenomena,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation

Denis  Olegovich  Bochenkov
Master Student, Institute of Mathematics and Information Technologies,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation

Pavel  Pavlovich  Marchenko
Master Student, Institute of Mathematics and Information Technologies,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation

Abstract.  On  the  basis  of  stochastic  methods,  a  numerical  simulation  of  the  quasiequilibrium turbulent gas disk of a galaxy located in thermal and dynamic equilibrium in the field  of  gravity  of the  stellar  disk  is  carried  out.  The  cumulative  effect  on  the  interstellar medium (ISM) of the physical mechanisms responsible for the generation of turbulence was modeled using the spectral version of forcing, that is, by creating perturbations of the velocity field with given spectral characteristics. The influence of velocity field perturbations on the dynamics of interstellar gas was investigated in the framework of numerical experiments with different input parameters, in particular, depending on the spatial scales and pump intensity. It is established that using this approach provokes the formation of a quasi-stable vertical structure in the gas disk, which is conformed qualitatively and quantitatively with observations of ISM in the disks of spiral galaxies.

Key words: galaxies, interstellar medium, galactic disk, gas dynamics, numerical methods.

Stochastic Models of the Vertical Structure of Turbulent Gaseous Disks of Galaxies by Korolev V.V., Eremin M.A., Bochenkov D.O., Marchenko P.P. is licensed under a Creative Commons Attribution 4.0 International License.

Citation in English: Mathematical Physics and Computer Simulation. Vol. 20 No. 6 2017 pp. 72-82

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