Collaborative Research: Accurate cosmology with strong gravitational lens time delays

合作研究：强引力透镜时间延迟的精确宇宙学

• 批准号: 1450141
• 负责人: Tommaso Treu
• 金额: $ 26.72万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-07-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1450141&HistoricalAwards=false
• 关键词: Collaborative; Research; Accurate; cosmology; strong

The goal of this collaborative project is to improve the current measurement of cosmological quantities, in particular the Hubble constant and the Dark Energy component, using time delay measurements from strong gravitational lenses acting upon quasars. This includes analysis of already taken data, as well as the anticipated discovery of approximately 50 new lenses. Gravitational time delays are not only independent of other methods but are also a very cost effective probe, requiring just a few hours on an 8-10m telescope for modeling the lens, and subsequent monitoring on 1m class telescopes.Broader impacts of the work include training of graduate students and postdoctoral researchers. At the K-12 level, Dr. Treu collaborates with the Santa Barbara Museum of Natural history (SBMNH) and Las Cumbres Observatories GlobalTelescope Network to organize public lectures, and establish an astronomy curriculum at the UC-operated Sedgwick Natural Reserve. Similarly, Dr. Fassnacht has developed a month-long course for high-school students on the Davis campus as part of the UC COSMOS program.

该合作项目的目标是利用作用于类星体的强引力透镜的时间延迟测量来改进当前对宇宙学量的测量，特别是哈勃常数和暗能量分量。这包括对已采集数据的分析，以及预计发现的大约 50 个新镜头。 重力时间延迟不仅独立于其他方法，而且还是一种非常经济高效的探测器，只需在 8-10m 望远镜上花费几个小时即可对透镜进行建模，并随后在 1m 级望远镜上进行监测。这项工作的更广泛影响包括培训研究生和博士后研究人员。在 K-12 年级，Treu 博士与圣巴巴拉自然历史博物馆 (SBMNH) 和拉斯昆布雷斯天文台全球望远镜网络合作组织公开讲座，并在加州大学运营的塞奇威克自然保护区建立天文学课程。同样，Fassnacht 博士在戴维斯校区为高中生开发了为期一个月的课程，作为 UC COSMOS 计划的一部分。

项目成果

DES meets Gaia: discovery of strongly lensed quasars from a multiplet search

DES 遇见盖亚：通过多重态搜索发现强透镜类星体

• DOI: 10.1093/mnras/sty1419
• 发表时间: 2018
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Agnello, A;Lin, H;Kuropatkin, N;Buckley-Geer, E;Anguita, T;Schechter, P L;Morishita, T;Motta, V;Rojas, K;Treu, T
• 通讯作者: Treu, T

Discovery of three strongly lensed quasars in the Sloan Digital Sky Survey

斯隆数字巡天发现三个强透镜类星体

• DOI: 10.1093/mnrasl/sly043
• 发表时间: 2018
• 期刊: Monthly Notices of the Royal Astronomical Society: Letters
• 作者: Williams, P R;Agnello, A;Treu, T;Abramson, L E;Anguita, T;Apostolovski, Y;Chen, G C-F;Fassnacht, C D;Hsueh, J W;Lemaux, B C
• 通讯作者: Lemaux, B C

Quasar lenses and pairs in the VST-ATLAS and Gaia

VST-ATLAS 和 Gaia 中的类星体透镜和对

• DOI: 10.1093/mnras/stx3226
• 发表时间: 2017
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Agnello, A;Schechter, P L;Morgan, N D;Treu, T;Grillo, C;Malesani, D;Anguita, T;Apostolovski, Y;Rusu, C E;Motta, V
• 通讯作者: Motta, V