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Evolution and dynamical properties of Bose-Einstein condensate dark matter stars
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
2015 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 91, no 4, 044041Article in journal (Refereed) Published
Abstract [en]

Using recently developed nonrelativistic numerical simulation code, we investigate the stability properties of compact astrophysical objects that may be formed due to the Bose-Einstein condensation of dark matter. Once the temperature of a boson gas is less than the critical temperature, a Bose-Einstein condensation process can always take place during the cosmic history of the Universe. Because of dark matter accretion, a Bose-Einstein condensed core can also be formed inside massive astrophysical objects such as neutron stars or white dwarfs, for example. Numerically solving the Gross-Pitaevskii-Poisson system of coupled differential equations, we demonstrate, with longer simulation runs, that within the computational limits of the simulation the objects we investigate are stable. Physical properties of a self-gravitating Bose-Einstein condensate are examined both in nonrotating and rotating cases.

Place, publisher, year, edition, pages
2015. Vol. 91, no 4, 044041
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-248449DOI: 10.1103/PhysRevD.91.044041ISI: 000350106300005OAI: oai:DiVA.org:uu-248449DiVA: diva2:799829
Available from: 2015-03-31 Created: 2015-03-30 Last updated: 2017-12-04Bibliographically approved

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Madarassy, Enikö J. M.

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