Pejch M.M., Morozov A.G., Khoperskov A.V. Modeling a Double-Hump Gas Rotation Curves in the Axisymmetric Gravitational Field of Galaxies .

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https://doi.org/10.15688/mpcm.jvolsu.2023.3.7

Maxim M. Pejch
Student, Department of Theoretical Physics and Wave Processes
Volgograd State University
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https://orcid.org/0009-0000-5022-8634
Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation

Alexander G. Morozov
Doctor of Sciences (Physics and Mathematics), Professor, Department of Theoretical Physics and Wave Processes,
Volgograd State University
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https://orcid.org/0009-0002-4213-9740
Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation

Alexander V. Khoperskov
Doctor of Sciences (Physics and Mathematics), Professor, Department of Information Systems and Computer Modeling,
Volgograd State University
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https://orcid.org/0000-0003-0149-7947
Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation

Abstract. We present the results of constructing models of galactic disks with gas rotation curves that have zones of sharp changes in circular velocity. Such models allow the development of shear hydrodynamic instabilities, in particular centrifugal instability and acoustic resonance-type instability. A sample of galaxies with rotation curves containing regions of sharp negative gradients has been formed. Models of these objects are intended for carrying out computational experiments aimed at studying the generation of spiral patterns due to the development of hydrodynamic instability. We have identified objects whose rotation curves in the central region cannot be modeled by the spheroidal bulge subsystem, which indicates the presence of special components in composite models of the stellar disk.

Key words: galaxies, rotation curves, hydrodynamic instabilities, decomposition, circular velocity.

Creative Commons License
Modeling a Double-Hump Gas Rotation Curves in the Axisymmetric Gravitational Field of Galaxies by Pejch M.M., Morozov A.G., Khoperskov A.V. is licensed under a Creative Commons Attribution 4.0 International License.

Citation in English: Mathematical Physics and Computer Simulation. Vol. 26 No. 3 2023, pp. 92-104

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