Bose-Einstein condensate dark matter model tested by galactic rotation curves
Marek Dwornik, Zolt\'an Keresztes, L\'aszl\'o \'A. Gergely
TL;DR
This paper evaluates the Bose-Einstein condensate dark matter model against galactic rotation curves, comparing its effectiveness to the NFW model across different galaxy types and rotation curve features.
Contribution
It provides an empirical test of the BEC dark matter model using real galaxy rotation data, highlighting its strengths and limitations compared to the NFW profile.
Findings
BEC model fits well when velocities increase throughout the galaxy.
NFW model slightly outperforms BEC in galaxies with flat rotation curves.
Both models are comparable when velocities increase monotonically.
Abstract
Rotation curves of spiral galaxies are fundamental tools in the study of dark matter. Here we test the Bose-Einstein condensate (BEC) dark matter model against rotation curve data of High and Low Surface Brightness (HSB and LSB) galaxies, respectively. When the rotational velocities increase over the whole observed range, the fit of the BEC model is similar to the one of the Navarro-Frenk-White (NFW) dark matter model. When however the rotation curves exhibit long flat regions, the NFW profiles provide a slightly better fit.
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