图 书 馆
天体物理学的挑战Challenge in Astrophysics |
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| 课程网址: | http://videolectures.net/psm08_bridle_cia/ |
| 主讲教师: | Sarah Bridle |
| 开课单位: | 伦敦大学学院 |
| 开课时间: | 2008-02-07 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | The GRavitational lEnsing Accuracy Testing 2008 (GREAT08) Challenge focuses on a problem that is of crucial importance for future observations in cosmology. The shapes of distant galaxies can be used to determine the properties of dark energy and the nature of gravity, because light from those galaxies is bent by gravity from the intervening dark matter. The observed galaxy images appear distorted, although only slightly, and their shapes must be precisely disentangled from the effects of pixelisation, convolution and noise. The worldwide gravitational lensing community has made significant progress in techniques to measure these distortions via the Shear TEsting Program (STEP). Via STEP, we have run challenges within our own community, and come to recognise that this particular image analysis problem is ideally matched to experts in statistical inference, inverse problems and computational learning. Thus, in order to continue the progress seen in recent years, we are seeking an infusion of new ideas from these communities. This document details the GREAT08 Challenge for potential participants. |
| 关 键 词: | 宇宙学; 暗能量; 剪切模拟程序 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2021-12-21：liyy |
| 阅读次数: | 31 |