Lens Mapping of Dark Matter Substructure with VSOP-2
Astrophysics
2008-02-14 v1
Abstract
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.
Cite
@article{arxiv.0802.1768,
title = {Lens Mapping of Dark Matter Substructure with VSOP-2},
author = {Shigenori Ohashi and Masashi Chiba and Kaiki Taro Inoue},
journal= {arXiv preprint arXiv:0802.1768},
year = {2008}
}
Comments
three pages, two figures, to be published in ASP conference series in the proceedings of 'Approaching Micro-Arcsecond Resolution with VSOP-2: Astrophysics and Technology'