Testing Bose-Einstein condensate dark matter models with the SPARC galactic rotation curves data

Abstract

The nature of one of the fundamental components of the Universe, dark matter, is still unknown. One interesting possibility is that dark matter could exist in the form of a self-interacting Bose–Einstein Condensate (BEC). The fundamental properties of dark matter in this model are determined by two parameters only, the mass and the scattering length of the particle. In the present study we investigate the properties of the galactic rotation curves in the BEC dark matter model, with quadratic self-interaction, by using 173 galaxies from the recently published Spitzer Photomery & Accurate Rotation Curves (SPARC) data. We fit the theoretical predictions of the rotation curves in the slowly rotating BEC models with the SPARC data by using genetic algorithms. We provide an extensive set of figures of the rotation curves, and we obtain estimates of the relevant astrophysical parameters of the BEC dark matter halos (central density, angular velocity and static radius). The density profiles of the dark matter distribution are also obtained. It turns out that the BEC model gives a good description of the SPARC data. The presence of the condensate dark matter could also provide a solution for the core–cusp problem.

Authors

Maria Crăciun
Tiberiu Popoviciu Institute of Numerical Analysis, Romanian Academy

Tiberiu Harko
Astronomical Observatory, 19 Ciresilor Street, 400487, Cluj-Napoca, Romania
Department of Physics, Babes-Bolyai University, 1 Kogalniceanu Street, 400084, Cluj-Napoca, Romania
School of Physics, Sun Yat-Sen University, Xingang Road, Guangzhou, 510275, People’s Republic of China

 

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Paper coordinates

M. Crăciun, T. Harko, Testing Bose-Einstein condensate dark matter models with the SPARC galactic rotation curves data, The European Physical Journal C, vol. 80 (2020), Article no. 735
DOI: 10.1140/epjc/s10052-020-8272-4

PDF

https://link.springer.com/content/pdf/10.1140/epjc/s10052-020-8272-4.pdf

About this paper

Journal

The European Physical Journal C

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Springer

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Online ISSN

1434-6052

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