Minimum mass of galaxies from BEC or scalar field dark matter

Details Minimum mass of galaxies from BEC or scalar field dark matter Minimum mass of galaxies from BEC or scalar field dark matter

2008-12-07

arxiv.org/abs/0812.1342v3

JCAP 1001:007,2010

Astronomy and Astrophysics

Astrophysics

10 pages, 1 figure, accepted in JCAP

Scientific paper

10.1088/1475-7516/2010/01/007

Many problems of cold dark matter models such as the cusp problem and the missing satellite problem can be alleviated, if galactic halo dark matter particles are ultra-light scalar particles and in Bose-Einstein condensate (BEC), thanks to a characteristic length scale of the particles. We show that this finite length scale of the dark matter can also explain the recently observed common central mass of the Milky Way satellites ($\sim 10^7 M_\odot$) independent of their luminosity, if the mass of the dark matter particle is about $10^{-22} eV$.

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