引力透镜搜索物质
摘要
引力透镜是探测不同质量尺度紧凑物质的强大工具。其重要性在于透镜对亮度物质和暗物质一样敏感。 Depending on the mass scale, all lensing effects are used in the search for matter: offset in position, image distortion, magnification, and multiple images. Gravitational lens detections cover three main mass ranges: roughly stellar mass, galaxy mass and galaxy cluster mass scales, i.e. well known classes of objects. Various searches based on different techniques explored the frequency of compact objects over more than 15 orders of magnitude, so far mostly providing null results in mass ranges different from the ones just mentioned. Combined, the lensing results offer some interesting limits on the cosmological frequency of compact objects in the mass interval 10^{-3} <= M/M_odot <= 10^{15}, unfortunately still with some gaps in between. In the near future, further studies along these lines promise to fill the gaps and to push the limits further down, or they might even detect new object classes.
引用
@article{arxiv.astro-ph/0207616,
title = {The Search for Matter with Gravitational Lensing},
author = {Joachim Wambsganss},
journal= {arXiv preprint arXiv:astro-ph/0207616},
year = {2007}
}
备注
10 pages, 4 figures, 1 Latex style file - To appear in `Where's the Matter? Tracing Bright and Dark Matter with the New Generation of Large Scale Surveys', Eds. M. Treyer & L. Tresse (Frontier Group, 2002)