重力レンズ効果を用いた銀河群領域の暗黒物質分布の探求

2013财年，我们在Space Warps（SW，spacewarps.org）中成功进行了两次透镜检索。 我领导了第一次西南透镜搜索并分析了结果。我比较了人类和机器人的表现，我们发现了相当多的透镜候选者，这些候选者被以前的机器人搜索所错过。我们的工作总结和介绍在论文I-http://arxiv.org/abs/1504.06148和论文II -http://arxiv.org/abs/1504.05587（将提交给MNRAS）中。从2013财年在BBC现场进行的第二次透镜搜索中，发现了一个有趣的透镜候选者。我们使用了几台世界级的望远镜，包括斯巴鲁（日本拥有），以确认这确实是一个透镜，并研究了透镜星系的性质，如恒星形成率。我制作了透镜质量模型，该模型计算透镜星系的放大程度，以推导出透镜星系的真实光度和其他此类属性（http：//arxiv.org/abs/1503.05824，MNRAS提交）。我们还为公民启用了透镜候选者的质量建模（Kueng et al. 2015），并发现公民与这项任务的专家相比产生了相当相似的结果。这是令人鼓舞的，因为当我们着手发现数千个透镜候选者时，来自市民的大规模建模帮助将变得至关重要。SW的资源具有传统价值，例如，我们生成的模拟透镜样本可用于测试其他透镜查找算法，如Chan等人（2014，http：//arxiv.org/abs/1411.5398）

We successfully conducted two lens searches in Space Warps (SW, spacewarps.org) in FY2013. I led the first SW lens search and analysed the results. I made comparisons between the performance of humans vs robots and we find a fairly large number of lens candidates which were missed by previous robotic searches. Our work is summarized and presented in Paper I- http://arxiv.org/abs/1504.06148 and Paper II - http://arxiv.org/abs/1504.05587 (to be submitted to MNRAS).From the second lens search which was conducted live on BBC in FY2013, an intriguing lens candidate was discovered. We used several world class telescopes including Subaru (owned by Japan) to confirm that this truly a lens and studied the properties of the lensed galaxy such as the star-formation rate. I produced the lens mass model which calculates how magnified the lensed galaxy is in order to derive the true luminosity of the lensed galaxy and other such properties (http://arxiv.org/abs/1503.05824, MNRAS submitted).We also enabled mass modelling of the lens candidates for the citizens (Kueng et al. 2015) and found that citizens produce fairly similar results compared to experts in this task. This is encouraging because assistance from citizens on mass modelling will become crucial as we embark upon the discovery of thousands of lens candidates.The resources from SW have legacy value e.g. the simulated lens samples that we generate are useful for testing other lens finding algorithms as we did in Chan et al. (2014, http://arxiv.org/abs/1411.5398)