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- W3100807034 abstract "We investigate the regular or chaotic nature of orbits of stars moving in the meridional plane (R,z) of an axially symmetric galactic model with a dense, massive spherical nucleus and a dark matter halo component. In particular, we study the influence of the fractional portion of the dark matter, by computing in each case the percentage of chaotic orbits, as well as the percentages of orbits of the main regular resonant families. In an attempt to distinguish between regular and chaotic motion, we use the Fast Lyapunov Indicator (FLI) method to extensive samples of orbits obtained by integrating numerically the equations of motion as well as the variational equations. Furthermore, a technique which is based mainly on the field of spectral dynamics that utilizes the Fourier transform of the time series of each coordinate is used for identifying the various families of regular orbits and also to recognize the secondary resonances that bifurcate from them. Two cases are studied in our work: (i) the case where we have a disk galaxy model (ii) the case where our model represents an elliptical galaxy. Comparison with early related work is also made." @default.
- W3100807034 created "2020-11-23" @default.
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- W3100807034 date "2013-01-01" @default.
- W3100807034 modified "2023-09-25" @default.
- W3100807034 title "Unveiling the Influence of Dark Matter in Axially Symmetric Galaxies" @default.
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- W3100807034 doi "https://doi.org/10.1017/pasa.2013.27" @default.
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