Are galaxies extending?

Details Are galaxies extending? Are galaxies extending?

2008-05-19

arxiv.org/abs/0805.2877v4

Phys.Lett.B681:118-121,2009

Astronomy and Astrophysics

Astrophysics

5 pages, 2figs, revtex,accepted version for PLB

Scientific paper

10.1016/j.physletb.2009.10.005

It is suggested that the recently observed size evolution of very massive compact galaxies in the early universe can be explained, if dark matter is in Bose Einstein condensate. In this model the size of the dark matter halos and galaxies depends on the correlation length of dark matter and, hence, on the the expansion of the universe. This theory predicts that the size of the galaxies increases as the Hubble radius of the universe even without merging, which agrees well with the recent observational data.

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