Towards testing the theory of gravity with DESI: summary statistics, model predictions and future simulation requirements

被引：50

作者：

Alam, Shadab ^{[1
]}

Arnold, Christian ^{[2
]}

Aviles, Alejandro ^{[3
,4
]}

Bean, Rachel ^{[5
]}

Cai, Yan-Chuan ^{[1
]}

Cautun, Marius ^{[2
,6
]}

Cervantes-Cota, Jorge L. ^{[3
]}

Cuesta-Lazaro, Carolina ^{[2
]}

Devi, N. Chandrachani ^{[7
,8
]}

Eggemeier, Alexander ^{[2
,32
]}

Fromenteau, Sebastien ^{[9
]}

Gonzalez-Morales, Alma X. ^{[4
,10
]}

Halenka, Vitali ^{[11
]}

He, Jian-hua ^{[2
,12
]}

Hellwing, Wojciech A. ^{[13
]}

Hernandez-Aguayo, Cesar ^{[2
,14
,15
]}

Ishak, Mustapha ^{[16
]}

Koyama, Kazuya ^{[17
]}

Li, Baojiu ^{[2
]}

de la Macorra, Axel ^{[18
]}

Rizo, Jennifer Meneses ^{[18
]}

Miller, Christopher ^{[11
,19
]}

Mueller, Eva-Maria ^{[20
]}

Niz, Gustavo ^{[10
]}

Ntelis, Pierros ^{[21
]}

Otero, Matia Rodriguez ^{[18
]}

Sabiu, Cristiano G. ^{[22
]}

Slepian, Zachary ^{[23
,24
]}

Stark, Alejo ^{[19
]}

Valenzuela, Octavio ^{[7
]}

Valogiannis, Georgios ^{[5
,25
]}

Vargas-Magana, Mariana ^{[18
]}

Winther, Hans A. ^{[26
]}

Zarrouk, Pauline ^{[2
,27
]}

Zhao, Gong-Bo ^{[17
,28
,29
]}

Zheng, Yi ^{[30
,31
]}

机构：

[1] Univ Edinburgh, Inst Astron, Edinburgh, Midlothian, Scotland

[2] Univ Durham, Dept Phys, Inst Computat Cosmol, South Rd, Durham DH1 3LE, England

[3] Inst Nacl Invest Nucl, Dept Fis, Apartado Postal 18-1027, Mexico City 11801, DF, Mexico

[4] Consejo Nacl Ciencia & Technol, Ave Insurgentes Sur 1582, Mexico City 03940, DF, Mexico

[5] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA

[6] Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands

[7] Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 20-364, Mexico City, DF, Mexico

[8] Manipur Univ, Dept Phys, Imphal 795003, Manipur, India

[9] Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Ave Univ S-N, Cuernavaca 62210, Mor, Mexico

[10] Univ Guanajuato, Dept Fis, Div Ciencias & Ingn, Campus Leon, Leon 37150, Mexico

[11] Univ Michigan, Dept Phys, 1085 South Univ, Ann Arbor, MI 48109 USA

[12] Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Peoples R China

[13] Polish Acad Sci, Ctr Theoret Phys, Al Lotnikow 32-46, PL-02668 Warsaw, Poland

[14] Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85748 Garching, Germany

[15] Excellence Cluster ORIGINS, Boltzmannstr 2, D-85748 Garching, Germany

[16] Univ Texas Dallas, Dept Phys, Richardson, TX 75080 USA

[17] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO 3FX, Hants, England

[18] Univ Nacl Autonoma Mexico, Inst Fis, Apdo Postal 20-364, Mexico City, DF, Mexico

[19] Univ Michigan, Dept Astron, Dept Phys, 1085 South Univ, Ann Arbor, MI 48109 USA

[20] Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England

[21] Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France

[22] Univ Seoul, Nat Sci Res Inst, 163 Seoulsiripdaero, Seoul 02504, South Korea

[23] Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA

[24] Univ Florida, Dept Astron, 211 Bryant Space Sci Ctr, Gainesville, FL 32611 USA

[25] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[26] Univ Oslo, Inst Theoret Astrophys, N-0315 Oslo, Norway

[27] Univ Paris Diderot, Sorbonne Univ, LPNHE, CNRS IN2P3, 4 Pl Jussieu, F-75252 Paris, France

[28] Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China

[29] Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China

[30] Sun Yat Sen Univ, Sch Phys & Astron, 2 Daxue Rd, Tangjia 519082, Zhuhai, Peoples R China

[31] Korea Inst Adv Study, Sch Phys, Hoegiro 85, Seoul 02455, South Korea

[32] Argelander Inst Astron, Hugel 71, D-53121 Bonn, Germany

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2021年 / 11期

基金：

美国国家科学基金会; 欧洲研究理事会; 欧盟地平线“2020”; 新加坡国家研究基金会; 英国科学技术设施理事会;

关键词：

cosmological simulations; galaxy clustering; modified gravity; redshift surveys; REDSHIFT-SPACE DISTORTIONS; LARGE-SCALE STRUCTURE; OSCILLATION SPECTROSCOPIC SURVEY; HALO OCCUPATION DISTRIBUTION; 3-POINT CORRELATION-FUNCTION; MOCK GALAXY CATALOGS; DARK-MATTER HALOES; COSMOLOGICAL HYDRODYNAMICAL SIMULATIONS; LUMINOUS RED GALAXIES; ASSEMBLY BIAS;

D O I：

10.1088/1475-7516/2021/11/050

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Shortly after its discovery, General Relativity (GR) was applied to predict the behavior of our Universe on the largest scales, and later became the foundation of modern cosmology. Its validity has been verified on a range of scales and environments from the Solar system to merging black holes. However, experimental confirmations of GR on cos-mological scales have so far lacked the accuracy one would hope for - its applications on those scales being largely based on extrapolation and its validity there sometimes questioned in the shadow of the discovery of the unexpected cosmic acceleration. Future astronomical instruments surveying the distribution and evolution of galaxies over substantial portions of the observable Universe, such as the Dark Energy Spectroscopic Instrument (DESI), will be able to measure the fingerprints of gravity and their statistical power will allow strong constraints on alternatives to GR. In this paper, based on a set of N-body simulations and mock galaxy catalogs, we study the predictions of a number of traditional and novel summary statistics beyond linear redshift distortions in two well-studied modified gravity models - chameleon f(R) gravity and a braneworld model - and the potential of testing these deviations from GR using DESI. These summary statistics employ a wide array of statistical properties of the galaxy and the underlying dark matter field, including two-point and higher-order statistics, environmental dependence, redshift space distortions and weak lensing. We find that they hold promising power for testing GR to unprecedented precision. The major future challenge is to make realistic, simulation-based mock galaxy catalogs for both GR and alternative models to fully exploit the statistic power of the DESI survey (by matching the volumes and galaxy number densities of the mocks to those in the real survey) and to better understand the impact of key systematic effects. Using these, we identify future simulation and analysis needs for gravity tests using DESI.

引用

页数：106

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