Lens Mapping of Dark Matter Substructure with VSOP-2

Details Lens Mapping of Dark Matter Substructure with VSOP-2 Lens Mapping of Dark Matter Substructure with VSOP-2

2008-02-13

arxiv.org/abs/0802.1768v1

Astronomy and Astrophysics

Astrophysics

three pages, two figures, to be published in ASP conference series in the proceedings of 'Approaching Micro-Arcsecond Resoluti

Scientific paper

Hierarchical clustering models of cold dark matter (CDM) predict that about
5% - 10% of a galaxy-sized halo with mass ~ 10^12 solar masses (M_sun) resides
in substructures (CDM subhalos) with masses <= 10^8 M_sun. 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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