Next-Generation Supernova Cosmology

下一代超新星宇宙学

• 批准号: 1815935
• 负责人: Ryan Foley
• 金额: $ 49.6万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1815935&HistoricalAwards=false
• 关键词: Next; Generation; Supernova; Cosmology

Type Ia supernovae (SNe Ia) are an excellent cosmological probe, and observations of SNe Ia are particularly good at constraining the current cosmic expansion rate and the nature of dark energy. This project will address the following questions: What is the expansion history of the Universe and what is driving the accelerated expansion? Is "dark energy" a cosmological constant, something more exotic, or do we need to re-evaluate our model of gravity? Is the "tension" between local and distant measurements of the Hubble constant caused by systematic errors, or does it point to new physics? As part of this research, training will be provided to several graduate students and 12 community-college students in observational techniques. Outreach will be undertaken through public lectures and the press, and the principle investigator will work with underrepresented students to transition from two-year colleges to four-year programs. The team will perform two low-redshift SNe Ia surveys to (1) reduce the largest source of systematic uncertainty in SN cosmology, the photometric calibration of the low-redshift SN sample, (2) further reduce other systematics related to dust reddening and SN physics, (3) cross-calibrate two of the world's best photometric systems on which 1250 cosmologically useful low-redshift SNe Ia will be observed, (4) produce the first sample of SNe Ia ranging from 0 z 0.8 observed with a single telescopic system, (5) obtain spectra of hundreds of SNe Ia, (6) examine potential distance improvements using spectral data, and (7) produce the tightest constraints on the nature of dark energy and current expansion rate of the Universe.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.

IA型超新星（SNE IA）是一种极好的宇宙学探针，对IA的观察尤其擅长限制当前的宇宙扩张率和暗能量的性质。该项目将解决以下问题：什么是宇宙的扩展历史，什么是推动加速扩张的？ “黑暗能量”是宇宙常数，更异国情调还是我们需要重新评估我们的重力模型？是由系统错误引起的哈勃常数的局部和遥远测量值之间的“张力”，还是指向新物理学？ 作为这项研究的一部分，将向数名研究生和12名观察技术的社区学生提供培训。 外展活动将通过公开讲座和媒体进行，主要调查员将与代表性不足的学生合作，从两年年的大学过渡到四年制课程。 The team will perform two low-redshift SNe Ia surveys to (1) reduce the largest source of systematic uncertainty in SN cosmology, the photometric calibration of the low-redshift SN sample, (2) further reduce other systematics related to dust reddening and SN physics, (3) cross-calibrate two of the world's best photometric systems on which 1250 cosmologically useful low-redshift SNe Ia will be observed, （4）生成第一个sne IA的样本，范围从单个伸缩系统观察到的0 z 0.8，（5）获得数百个IA的光谱，（6）使用频谱数据检查潜在的距离改善，（7）（7）通过对宇宙的深度和当前奖励的性质产生最严格的限制。智力优点和更广泛的影响审查标准。

项目成果

First cosmology results using type Ia supernovae from the Dark Energy Survey: the effect of host galaxy properties on supernova luminosity

• DOI: 10.1093/mnras/staa946
• 发表时间: 2020-01
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: M. Smith;M. Sullivan;P. Wiseman;R. Kessler;D. Scolnic;D. Brout;C. D'Andrea;T. Davis;R. Foley;C. Frohmaier;L. Galbany;R. Gupta;C. Guti'errez;S. Hinton;L. Kelsey;C. Lidman;E. MacAulay;A. Moller;R. Nichol;P. Nugent;A. Palmese;M. Pursiainen;M. Sako;R. Thomas;B. Tucker;D. Carollo;G. Lewis;N. E. Sommer;T. Abbott;M. Aguena;S. Allam;S. Ávila;E. Bertin;S. Bhargava;D. Brooks;E. Buckley-Geer;D. Burke;A. Rosell;M. Kind;M. Costanzi;L. Costa;J. Vicente;S. Desai;H. Diehl;P. Doel;T. Eifler;S. Everett;B. Flaugher;P. Fosalba;J. Frieman;J. Garc'ia-Bellido;E. Gaztañaga;K. Glazebrook;D. Gruen;R. Gruendl;J. Gschwend;G. Gutiérrez;W. Hartley;D. Hollowood;K. Honscheid;D. James;E. Krause;K. Kuehn;N. Kuropatkin;M. Lima;N. MacCrann;M. Maia;J. Marshall;P. Martini;Peter Melchior;F. Menanteau;R. Miquel;F. Paz-Chinch'on;A. Plazas;A. Romer;A. Roodman;E. Rykoff;E. Sánchez;V. Scarpine;M. Schubnell;S. Serrano;I. Sevilla-Noarbe;E. Suchyta;M. Swanson;G. Tarlé;D. Thomas;D. Tucker;T. Varga;A. R. W. T. D. E. S. Collaboration

The Circumstellar Environments of Double-peaked, Calcium-strong Transients 2021gno and 2021inl

• DOI: 10.3847/1538-4357/ac67dc
• 发表时间: 2022-03
• 期刊: The Astrophysical Journal
• 作者: W. Jacobson-Galán;P. Venkatraman;R. Margutti;D. Khatami;G. Terreran;R. Foley;R. Angulo;C. Angus;K. Auchettl;P. Blanchard;A. Bobrick;J. Bright;D. Brout;K. Chambers;C. Couch;D. Coulter;K. Clever;K. Davis;T. D. de Boer;L. DeMarchi;S. Dodd;D. Jones;J. Johnson;C. Kilpatrick;N. Khetan;Z. Lai;D. Langeroodi;C.-C. Lin-C.;E. Magnier;D. Milisavljevic;H. Perets;J. Pierel;J. Raymond;S. Rest;A. Rest;R. Ridden-Harper;K. Shen;M. Siebert;C. Smith;Kirsty Taggart;S. Tinyanont;F. Valdes;V. Villar;Q. Wang;S. Yadavalli;Y. Zenati;A. Zenteno

First cosmological results using Type Ia supernovae from the Dark Energy Survey: measurement of the Hubble constant

• DOI: 10.1093/mnras/stz978
• 发表时间: 2018-11
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: E. MacAulay;R. Nichol;David Bacon;D. Brout;T. Davis;B. Zhang;B. Bassett;D. Scolnic;A. Moller-A

Significant luminosity differences of two twin Type Ia supernovae

两颗孪生 Ia 型超新星的显着光度差异

• DOI: 10.1093/mnras/stz3324
• 发表时间: 2019
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Foley, Ryan J.;Hoffmann, Samantha L.;Macri, Lucas M.;Riess, Adam G.;Brown, Peter J.;Filippenko, Alexei V.;Graham, Melissa L.;Milne, Peter A.
• 通讯作者: Milne, Peter A.

First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters

• DOI: 10.3847/2041-8213/ab04fa
• 发表时间: 2019-02-20
• 期刊: ASTROPHYSICAL JOURNAL LETTERS
• 影响因子: 7.9
• 作者: Abbott, T. M. C.;Allam, S.;Zhang, Y.
• 通讯作者: Zhang, Y.