Vestnik YuUrGU. Ser. Mat. Model. Progr., 2019, Volume 12, Issue 2, Pages 123–135
Programming & Computer Software
Numerical modelling of the dynamics of the galactic halos in the colliding galaxies
S. S. Khrapova, A. V. Khoperskova, V. I. Korchaginb
a Volgograd State University, Volgograd, Russian Federation
b Southern Federal University, Rostov-on-Don, Russian Federation
Based on parallel three-dimensional simulation of N-body and gas self-consistent dynamics, we study the behavior of
hot coronal gas in the colliding galaxies with “live” dark matter halos.
We model a few scenarios of the galactic collisions including “bull-eye” and non-central ones, and use
different values of the initial velocities of the colliding galaxies. Taking into account the self-gravity, we demonstrate that the collision of gaseous and
stellar components does not lead to the formation of a gaseous
“protogalaxy” observed in some numerical simulations. Also,
we show that about sixty percent of hot halo gas is expelled into intergalactic space during the collision.
Numerical simulations show that a considerable amount of gas (up to 70% for a bull-eye collisions) exchanges between two colliding galaxies.
Multi-GPU, OpenMP-CUDA, GPU-Direct, NVIDIA TESLA, N-body, SPH, colliding galaxies.
|Ministry of Education and Science of the Russian Federation
|Russian Science Foundation
|AVK and SSK acknowledges the Ministry of Science and Higher
Education of the Russian Federation (government task, project No. 2.852.2017/4.6) for
the financial support of the development of the software and numerical simulations. VIK
thanks Russian Science Foundation (grant No. 18-12-00213) for the financial support of the
development of models of galaxies and the analysis of the results of numerical simulations.
Authors thank T. Girard for valuable comments. The research is carried out using the
equipment of the shared research facilities of HPC computing resources at Lomonosov
Moscow State University supported by project RFMEFI62117X0011.
PDF file (2281 kB)
MSC: 34N05, 37M05, 68U20
S. S. Khrapov, A. V. Khoperskov, V. I. Korchagin, “Numerical modelling of the dynamics of the galactic halos in the colliding galaxies”, Vestnik YuUrGU. Ser. Mat. Model. Progr., 12:2 (2019), 123–135
Citation in format AMSBIB
\by S.~S.~Khrapov, A.~V.~Khoperskov, V.~I.~Korchagin
\paper Numerical modelling of the dynamics of the galactic halos in the colliding galaxies
\jour Vestnik YuUrGU. Ser. Mat. Model. Progr.
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