Document Type

Article

Department

​​Physics

Publication Date

2002

Abstract

Dark matter arising from spontaneous symmetry breaking of a neutral scalar field coupled to gravity comprises ultra low mass bosons with a Bose-Einstein condensation temperature far above the present background temperature. Assuming galactic halos to consist of a Bose-Einstein condensate of astronomical extent, we calculate the condensate coherence length, transition temperatures, mass distribution, and orbital velocity curves, and deduce the particle mass and number density from the observed rotation curves for the Andromeda and Triangulum galaxies. We also consider the possibility of superfluid behaviour in the halos of rotating galaxies, and estimate the critical angular frequency and line density for formation of quantised vortices.

Comments

Published version available: https://link.springer.com/article/10.1023/A:1015934027224

Publication Title

General Relativity and Gravitation

Volume

34

Issue

5

DOI

10.1023/A:1015934027224

Download

Share

COinS