DOAJ Open Access 2024

Radial Oscillations of Dark Matter Stars Admixed with Dark Energy

Camila Sepúlveda Grigoris Panotopoulos

Abstrak

We imagine spherically symmetric configurations made of both dark matter and dark energy in the halo of spiral galaxies. Adopting a polytropic equation of state for dark matter and the Extended Chaplygin gas equation of state for dark energy, we model the same object with three different dark matter–dark energy compositions. We compute the frequencies and the corresponding eigenfunctions of the ten lowest modes, integrating the equations for the radial perturbations by imposing the appropriate boundary conditions at the center and the surface of the object. Also, a comparison between the different models is made.

Topik & Kata Kunci

Elementary particle physics

Penulis (2)

Camila Sepúlveda

Grigoris Panotopoulos

Format Sitasi

APA MLA BibTeX

Sepúlveda, C., Panotopoulos, G. (2024). Radial Oscillations of Dark Matter Stars Admixed with Dark Energy. https://doi.org/10.3390/universe10010041

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Informasi Jurnal

Tahun Terbit: 2024
Sumber Database: DOAJ
DOI: 10.3390/universe10010041
Akses: Open Access ✓