期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 363, 期 4, 页码 1136-1144出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2005.09523.x
关键词
gravitational lensing
We propose the novel method of 'gravitational imaging' to detect and quantify luminous and dark matter substructures in gravitational lens galaxies. The method utilizes highly magnified Einstein rings and arcs as sensitive probes of small perturbations in the lens potential (due to the presence of the mass substructure), reconstructing the gravitational lens potential non-parametrically. Numerical simulations show that the implemented algorithm can reconstruct the smooth mass distribution of a typical lens galaxy - exhibiting reasonable signal-to-noise Einstein rings - as well as compact substructure with masses as low as M-sub similar to 10(-3) M-lens, if present. 'Gravitational imaging' of pure dark matter substructures around massive galaxies can provide new insight into the standard cold dark matter paradigm, using very different physics than ground-based direct-detection experiments, and probe the hierarchical structure-formation model which predicts that this substructure exists in great abundance.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据