Dynamical evolution of dark matter admixed neutron stars
Jan 6, 202214 pages
Published in:
- Phys.Rev.D 105 (2022) 2, 023010
- Published: Jan 6, 2022
e-Print:
- 2201.02274 [gr-qc]
DOI:
- 10.1103/PhysRevD.105.023010 (publication)
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Abstract: (APS)
We dynamically evolve for the first time dark matter admixed neutron stars with fermionic dark matter. These systems are mixtures of the ordinary nuclear matter of a neutron star and dark matter. To perform our dynamical evolutions, we derive the equations of motion, in conservation form, for spherically symmetric systems with an arbitrary number of perfect fluids. Using finite volume and high-resolution shock-capturing methods, we dynamically evolve the two-fluid case, with the first fluid modeling ordinary matter and the second fluid modeling dark matter. We use our dynamical solutions to study nonlinear stability, radial oscillation frequencies, and a dynamical formation process.Note:
- 14 pages, 8 figures
- stability: nonlinear
- fermion: dark matter
- symmetry: rotation
- oscillation: frequency
- neutron star
- fluid: multiple
- field equations
- nuclear matter
- formation
- conservation law
References(0)
Figures(8)
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