Dwarf Galaxy Sized Monopoles as Dark Matter?

Details Dwarf Galaxy Sized Monopoles as Dark Matter? Dwarf Galaxy Sized Monopoles as Dark Matter?

2012-02-02

arxiv.org/abs/1202.0560v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

30 pages, 1 eps figure, refs added

Scientific paper

We propose a model of dark matter: galaxy-sized 't Hooft-Polyakov magnetic monopoles in a new, extraordinarily weakly coupled SU(2) gauge sector with an adjoint Higgs field and two flavors of fundamental fermions. We fit the parameters by asserting that the dark matter halos of the lightest dwarf spheroidal (dSph) galaxies consist of a single charge Q=1 monopole. Lensing and wide binary bounds are then easily satisfied and the monopoles form in time to help with CMB fluctuations. In this model dSph and low surface brightness (LSB) halos automatically have (1) A minimum mass - Dirac quantization solves the missing satellite problem, (2) A constant density core (r

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