Paper:	Lens Mapping of Dark Matter Substructure with VSOP-2
Volume:	402, Approaching Micro-Arcsecond Resolution with VSOP-2: Astrophysics and Technologies
Page:	290
Authors:	Ohashi, S.; Chiba, M.; Inoue, K.T.
Abstract:	Hierarchical clustering models of cold dark matter (CDM) predict that about 5% - 10% of a galaxy-sized halo with mass ∼ 1012 solar masses (M⊙) resides in substructures (CDM subhalos) with masses ≤ 108M⊙. To directly identify such substructures, we propose to observe radio continuum emission from multiply imaged QSOs using VSOP-2 with a high angular resolution.

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