Minimum mass of galaxies from BEC or scalar field dark matter - INSPIRE

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Minimum mass of galaxies from BEC or scalar field dark matter

Dec, 2008

3 pages

Published in:

JCAP 01 (2010) 007

e-Print:

0812.1342 [astro-ph]

DOI:

10.1088/1475-7516/2010/01/007

View in:

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Abstract: (arXiv)

It is known that many problems of cold dark models such as the cusp problem and the missing satellite problem can be alleviated, if the halo dark matter particles are in Bose Einstein condensate (BEC), thank to a characteristic length scale of the particles. This model can also well explain the recently observed common mass about

10^7 M_\odot

within

300 pc

of Milky Way satellites almost independent of the luminosity. The finite length scale of BEC dark matter particles naturally leads to a finite minimum mass of dwarf galaxies, which is universal and independent of the visible matter fraction. This nontrivial coincidence of theory and observation strongly supports the idea that dark matter is indeed in BEC.

98.62.Gq
95.35.+d

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