Limits on primordial non-Gaussianities from BOSS galaxy-clustering data

被引：0

作者：

D'Amico, Guido ^{[1
,2
]}

Lewandowski, Matthew ^{[3
]}

Senatore, Leonardo ^{[4
]}

Zhang, Pierre ^{[4
,5
,6
,7
]}

机构：

[1] Univ Parma, Dept Math Phys & Comp Sci, I-43124 Parma, Italy

[2] Ist Nazl Fis Nucl, Grp Coll Parma, I-43124 Parma, Italy

[3] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA

[4] Swiss Fed Inst Technol, Inst Theoret Phys, CH-8093 Zurich, Switzerland

[5] Univ Sci & Technol China, Sch Phys Sci, Dept Astron, Hefei 230026, Anhui, Peoples R China

[6] Univ Sci & Technol China, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China

[7] Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China

来源：

PHYSICAL REVIEW D | 2025年 / 111卷 / 06期

关键词：

POWER-SPECTRUM ANALYSIS; BISPECTRUM; EVOLUTION;

D O I：

10.1103/PhysRevD.111.063514

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyze the power spectrum and the bispectrum of BOSS galaxy-clustering data using the prediction from the effective field theory of large-scale structure at one-loop order for both the power spectrum and the bispectrum. With Lambda CDM parameters fixed to Planck preferred values, we set limits on three templates of non-Gaussianities predicted by many inflationary models: the equilateral, the orthogonal, and the local shapes. After validating our analysis against simulations, we find fequil NL = 207 + 292, fNLorth = -68 + 73, floc NL = 52 + 34, at 68% confidence level. These bispectrum-based constraints from large-scale structure, not far from the ones of WMAP, suggest promising results from upcoming surveys.

引用

页数：21

共 28 条

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Bartolo, Nicola
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