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		| 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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