Gravitational Lenses as cosmic telescopes

引力透镜作为宇宙望远镜

• 批准号: 2109358
• 金额: --
• 依托单位: University of Nottingham
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2109358
• 关键词: Gravitational; Lenses; cosmic; telescopes

Our group plays a key role in the gravitational lensing element of the Herschel-ATLAS survey carried out by the Herschel Space Observatory. H-ATLAS is rapidly increasing the number of known strong lens systems with a continual stream of new detections at significantly higher redshifts than existing lens samples reach. This allows astronomers to probe deeper into the young Universe when galaxy evolution was in its early stages. These new lens systems are presently being followed up by the ground-breaking ALMA telescope in Chile which offers incredibly high resolution and sensitivity. This, in combination with the fact that the lenses themselves give a magnified image of the background source galaxy enables analysis of high redshift galaxies at a level of precision that is impossible to obtain otherwise. The project being offered is to carry out lens modelling of the ALMA observations to learn about both the foreground galaxy doing the lensing and the background galaxy being lensed. The project includes the possibility of developing lens modelling techniques.

我们的小组在赫歇尔空间天文台进行的赫歇尔-阿特拉斯巡天的引力透镜元素中发挥了关键作用。H-ATLAS正在迅速增加已知强透镜系统的数量，新检测的连续流显著高于现有透镜样品所达到的红移。这使得天文学家能够更深入地探索星系演化处于早期阶段的年轻宇宙。这些新的透镜系统目前正在由智利突破性的ALMA望远镜跟进，它提供了令人难以置信的高分辨率和灵敏度。这一点，再加上透镜本身可以放大背景源星系的图像，使得对高红移星系的分析达到了其他方法无法达到的精度。提供的项目是对ALMA观测进行透镜建模，以了解正在透镜的前景星系和正在透镜的背景星系。该项目包括开发镜头建模技术的可能性。