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Bose-Einstein Condensate Dark Matter Halos Confronted with Galactic Rotation Curves
Joint Authors
Dwornik, M.
Keresztes, Z.
Kun, E.
Gergely, L. Á.
Source
Advances in High Energy Physics
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-02-08
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
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.
American Psychological Association (APA)
Dwornik, M.& Keresztes, Z.& Kun, E.& Gergely, L. Á.. 2017. Bose-Einstein Condensate Dark Matter Halos Confronted with Galactic Rotation Curves. Advances in High Energy Physics،Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1122044
Modern Language Association (MLA)
Dwornik, M.…[et al.]. Bose-Einstein Condensate Dark Matter Halos Confronted with Galactic Rotation Curves. Advances in High Energy Physics No. 2017 (2017), pp.1-14.
https://search.emarefa.net/detail/BIM-1122044
American Medical Association (AMA)
Dwornik, M.& Keresztes, Z.& Kun, E.& Gergely, L. Á.. Bose-Einstein Condensate Dark Matter Halos Confronted with Galactic Rotation Curves. Advances in High Energy Physics. 2017. Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1122044
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122044