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arXiv · 2511.10682

Variations of angular momentum $L_z$ as an indicator of orbital chaos of globular clusters in the central region of the Galaxy with a bar

A. T. ~Bajkova·A. A. ~Smirnov·V. V. ~Bobylev
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Abstract

It is shown how the violation of the invariance of the $Z$-component of the orbital angular momentum $L_z$ in the axially symmetric potential of the Galaxy with a bar can serve as an indicator of the degree of orbital chaos of globular clusters in the central region of the Galaxy. In this case, the higher the variations of $L_z$ of the orbit over a certain period of time, the higher the chaos of the orbit. In essence, a new method for analyzing orbital dynamics -- regular or chaotic -- is proposed. A high level of correlation between the results of orbit classification by the proposed method and the results of classification by other methods is shown. As a result, a sample of 45 globular clusters in the central region of the Galaxy with a radius of 3.5 kpc is divided into regular, chaotic, and weakly chaotic.

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A. T. ~Bajkova, A. A. ~Smirnov, V. V. ~Bobylev. 2025-11-11. Variations of angular momentum $L_z$ as an indicator of orbital chaos of globular clusters in the central region of the Galaxy with a bar. https://doi.org/10.31725/0367-7966-2025-238-1-10

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