Stronger weak lensing cosmology

更强的弱透镜宇宙学

• 批准号: 2009210
• 负责人: Gary Bernstein
• 金额: $ 42.65万
• 依托单位: University of Pennsylvania
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2009210&HistoricalAwards=false
• 关键词: Stronger; weak; lensing; cosmology

Cosmologists have determined that 95% of the mass and energy in the Universe is "dark," meaning that it neither absorbs nor emits its own light. But the gravity of "dark matter" does bend light, so it is possible to map the dark matter by careful study of the distortions of sky images. Led by the Dark Energy Survey (DES), three large-scale experiments are now measuring distortions using the images of over 100 million galaxies to measure the dark-matter structure of the nearby universe, to see if its growth over time matches the predictions of current theories of gravity, dark matter, and dark energy. To help complete the DES analysis, these researchers will develop new methods for measuring both the distortion of the galaxies and their distances from Earth. The grant also will fund participation of first-generation/low-income undergraduates and the sharing of dark-universe results with the Philadelphia community by travelling exhibits and presentations. Many of the current methods for testing cosmology with imaging surveys like DES and the Rubin Observatory’s Legacy Survey of Space and Time (LSST) are based on ad hoc assumptions and statistics that require complex testing for accuracy and may lose valuable information. This research will replace many of these with methods based on principled statistical representations of the data, rendering the results more understandable, precise, and closer to optimal in extracting information. The PI will also transfer techniques developed for DES calibration to LSST, which will benefit a broad swath of astronomy.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

宇宙学家已经确定，宇宙中95%的质量和能量是“暗的”，这意味着它既不吸收也不发射自己的光。但“暗物质”的引力确实会使光线弯曲，因此，通过仔细研究天空图像的扭曲，就有可能绘制出暗物质图。在暗能量调查(DES)的领导下，三个大型实验现在正在使用超过1亿个星系的图像来测量扭曲，以测量附近宇宙的暗物质结构，看看它随时间的增长是否与当前引力、暗物质和暗能量理论的预测相匹配。为了帮助完成DES分析，这些研究人员将开发新的方法来测量星系的变形及其与地球的距离。这笔赠款还将资助第一代/低收入本科生的参与，并通过巡回展览和演讲与费城社区分享黑暗宇宙的成果。目前许多用成像测量来测试宇宙学的方法，如DES和鲁宾天文台的遗留空间和时间调查(LSST)，都是基于特别的假设和统计数据，需要复杂的准确性测试，可能会丢失有价值的信息。这项研究将用基于数据的原则性统计表示的方法来取代其中的许多方法，使结果更容易理解、更精确，并且在提取信息方面更接近最佳。PI还将把为DES校准开发的技术转移到LSST，这将使广泛的天文学受益。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Dark energy survey year 1 results: Constraining baryonic physics in the Universe

• DOI: 10.1093/mnras/stab357
• 发表时间: 2020-07
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Hung-Jin Huang;T. Eifler;R. Mandelbaum;G. Bernstein;Anqi Chen;A. Choi;J. García-Bellido;D. Huterer;E. Krause;E. Rozo;Sukhdeep Singh;S. Bridle;J. DeRose;J. Elvin-Poole;X. Fang;O. Friedrich;M. Gatti;E. Gaztañaga;D. Gruen;W. Hartley;B. Hoyle;M. Jarvis;N. MacCrann;V. Miranda;M. Rau;J. Prat;C. S'anchez;S. Samuroff;M. Troxel;J. Zuntz;T. Abbott;M. Aguena;J. Annis;S. Ávila;M. Becker;E. Bertin;D. Brooks;D. Burke;A. Carnero Rosell-A.-Carnero Rosell-2124071406;M. Carrasco Kind-M.-Carrasco Kind-2124064684;J. Carretero;F. Castander;L. D. da Costa-L.-D.-da Costa-2124068506;J. De Vicente-J.-De Vicente-2124230603;J. Dietrich;P. Doel;S. Everett;B. Flaugher;P. Fosalba;J. Frieman;R. Gruendl;G. Gutiérrez;S. Hinton;K. Honscheid;D. James;K. Kuehn;O. Lahav;M. Lima;M. Maia;J. Marshall;F. Menanteau;R. Miquel;F. Paz-Chinchón;A. P. Malagón;K. Romer;A. Roodman;E. Sánchez;V. Scarpine;S. Serrano;I. Sevilla;Mathew Smith;M. Soares-Santos;E. Suchyta;M. Swanson;G. Tarlé;Diehl Thomas;J. Weller

Joint analysis of Dark Energy Survey Year 3 data and CMB lensing from SPT and Planck . I. Construction of CMB lensing maps and modeling choices

• DOI: 10.1103/physrevd.107.023529
• 发表时间: 2022-03
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Y. Omori;E. Baxter;C. Chang;O. Friedrich;A. Alarcon;O. Alves;A. Amon;F. Andrade-Oliveira;K. Bechtol;M. Becker;G. Bernstein;J. Blazek;L. Bleem;H. Camacho;A. Campos;A. Rosell;M. Kind;R. Cawthon;R. Chen;A. Choi;J. Cordero;T. Crawford;M. Crocce;C. Davis;J. DeRose;S. Dodelson;C. Doux;A. Drlica-Wagner;K. Eckert;T. Eifler;F. Elsner;J. Elvin-Poole;S. Everett;X. Fang;A. Fert'e;P. Fosalba;M. Gatti;G. Giannini;D. Gruen;R. Gruendl;I. Harrison;K. Herner;H. Huang;E. Huff;D. Huterer;M. Jarvis;E. Krause;N. Kuropatkin;P. Léget;P. Lemos;A. Liddle;N. MacCrann;J. McCullough;J. Muir;J. Myles;A. Navarro-Alsina;S. Pandey;Y. Park;A. Porredon;J. Prat;M. Raveri;R. Rollins;A. Roodman;R. Rosenfeld;A. Ross;E. Rykoff;C. S'anchez;J. Sánchez;L. Secco;I. Sevilla-Noarbe;E. Sheldon;T. Shin;M. Troxel;I. Tutusaus;T. Varga;N. Weaverdyck;Risa Wechsler;W. L. K. Wu;B. Yanny;Biao Yin;Y. Zhang;J. Zuntz;T. Abbott;M. Aguena;S. Allam;J. Annis;D. Bacon;B. Benson;E. Bertin;S. Bocquet;D. Brooks;D. Burke;J. Carlstrom;J. Carretero;C. Chang;R. Chown;M. Costanzi;L. Costa;A. Crites;M. Pereira;T. Haan;J. Vicente;S. Desai;H. Diehl;M. Dobbs;P. Doel;W. Everett;I. Ferrero;B. Flaugher;D. Friedel;J. Frieman;J. Garc'ia-Bellido;E. Gaztañaga;E. George;T. Giannantonio;N. Halverson;S. Hinton;G. Holder;D. Hollowood;W. Holzapfel;K. Honscheid;J. Hrubeš;D. James;L. Knox;K. Kuehn;O. Lahav;A. Lee;M. Lima;D. Luong-Van;M. March;J. McMahon;Peter Melchior;F. Menanteau;S. Meyer;R. Miquel;L. Mocanu;J. Mohr;R. Morgan;T. Natoli;S. Padin;A. Palmese;F. Paz-Chinch'on;A. Pieres;A. P. Malag'on;C. Pryke;C. Reichardt;A. Romer;J. Ruhl;E. Sanchez;K. Schaffer;M. Schubnell;S. Serrano;E. Shirokoff;M. Smith;Z. Staniszewski;A. Stark;E. Suchyta;G. Tarlé;D. Thomas;C. To;J. Vieira;J. Weller;R. Williamson

Dark energy survey year 3 results: High-precision measurement and modeling of galaxy-galaxy lensing

暗能量调查第三年结果：星系-星系透镜效应的高精度测量和建模

• DOI: 10.1103/physrevd.105.083528
• 发表时间: 2022
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Prat, J.;Blazek, J.;Sánchez, C.;Tutusaus, I.;Pandey, S.;Elvin-Poole, J.;Krause, E.;Troxel, M. A.;Secco, L. F.;Amon, A.
• 通讯作者: Amon, A.

Dark Energy Survey Year 3 results: Cosmology from cosmic shear and robustness to data calibration

• DOI: 10.1103/physrevd.105.023514
• 发表时间: 2022-01-13
• 期刊: PHYSICAL REVIEW D
• 影响因子: 5
• 作者: Amon, A.;Gruen, D.;Weller, J.
• 通讯作者: Weller, J.

Dark Energy Survey Year 3 results: Exploiting small-scale information with lensing shear ratios

暗能量调查第三年结果：利用透镜剪切比的小规模信息

• DOI: 10.1103/physrevd.105.083529
• 发表时间: 2022
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Sánchez, C.;Prat, J.;Zacharegkas, G.;Pandey, S.;Baxter, E.;Bernstein, G. M.;Blazek, J.;Cawthon, R.;Chang, C.;Krause, E.
• 通讯作者: Krause, E.