Bose-Einstein Condensate Dark Matter Halos Confronted with Galactic Rotation Curves

Author:

Dwornik M.1,Keresztes Z.1,Kun E.1,Gergely L. Á.1ORCID

Affiliation:

1. Institute of Physics, University of Szeged, Dóm Tér 9, Szeged 6720, Hungary

Abstract

We present a comparative confrontation of both the Bose-Einstein Condensate (BEC) and the Navarro-Frenk-White (NFW) dark halo models with galactic rotation curves. We employ 6 High Surface Brightness (HSB), 6 Low Surface Brightness (LSB), and 7 dwarf galaxies with rotation curves falling into two classes. In the first class rotational velocities increase with radius over the observed range. The BEC and NFW models give comparable fits for HSB and LSB galaxies of this type, while for dwarf galaxies the fit is significantly better with the BEC model. In the second class the rotational velocity of HSB and LSB galaxies exhibits long flat plateaus, resulting in better fit with the NFW model for HSB galaxies and comparable fits for LSB galaxies. We conclude that due to its central density cusp avoidance the BEC model fits better dwarf galaxy dark matter distribution. Nevertheless it suffers from sharp cutoff in larger galaxies, where the NFW model performs better. The investigated galaxy sample obeys the Tully-Fisher relation, including the particular characteristics exhibited by dwarf galaxies. In both models the fitting enforces a relation between dark matter parameters: the characteristic density and the corresponding characteristic distance scale with an inverse power.

Funder

European Union

Publisher

Hindawi Limited

Subject

Nuclear and High Energy Physics

Cited by 6 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. A unified cosmological dark sector from a Bose–Einstein condensate;Physics of the Dark Universe;2023-12

2. Boson dark matter halos with a dominant noncondensed component;Journal of Cosmology and Astroparticle Physics;2021-11-01

3. Testing Two Halo Models by Galactic Rotation Curve;Journal of Physics: Conference Series;2021-03-01

4. On the Quantum Origin of a Dark Universe;Physical Sciences Forum;2021-02-22

5. Dark Matter as a Non-Relativistic Bose–Einstein Condensate with Massive Gravitons;Symmetry;2018-10-17

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