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arXiv · 2607.19505

Local morphology and asymmetry of galactic rotation curves in a kinetic gas transport framework: NGC 3198

Anton A. Lipovka·Anna A. Lipovka
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Abstract

We investigate whether the observed fine structure and asymmetry of non-averaged galactic rotation curves can be reconstructed directly from the observed HI distribution within the framework of a kinetic gas transport description. Using the observed HI density profiles separately for the approaching (north-eastern) side and the receding (south-western) side of the galaxy NGC~3198, we reconstruct the corresponding rotation curves based on the equation previously derived in \citet{Lipovka2022}. It is shown that the reconstructed curves reproduce not only the approximately flat large-scale behaviour of the observed rotation curves, but also their detailed local morphology and asymmetry separately for the north-eastern and south-western sides of the galactic disk. The obtained results indicate that the local structure of galactic rotation curves is closely connected with the local HI distribution and arises naturally as a consequence of kinetic gas transport processes in galactic disks.

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Anton A. Lipovka, Anna A. Lipovka. 2026-07-21. Local morphology and asymmetry of galactic rotation curves in a kinetic gas transport framework: NGC 3198. https://doi.org/10.5281/zenodo.20386100

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