Clustering and redshift-space distortions in modified gravity models with massive neutrinos

被引：13

作者：

Enrique Garcia-Farieta, Jorge ^{[1
,2
]}

Marulli, Federico ^{[2
,3
,4
]}

Veropalumbo, Alfonso ^{[5
]}

Moscardini, Lauro ^{[2
,3
,4
]}

Casas-Miranda, Rigoberto A. ^{[1
]}

Giocoli, Carlo ^{[3
,6
]}

Baldi, Marco ^{[2
,3
,4
]}

机构：

[1] Univ Nacl Colombia, Sede Bogota, Dept Fis, Ave Cra 30 45-03, Bogota 11001, Colombia

[2] Alma Mater Studiorum Univ Bologna, Dipartimento Fis & Astron, Via Gobetti 93-2, I-40129 Bologna, Italy

[3] Osservatorio Astrofis & Sci Spazio Bologna, INAF, Via Gobetti 93-3, I-40129 Bologna, Italy

[4] INFN, Sez Bologna, Viale Berti Pichat 6-2, I-40127 Bologna, Italy

[5] Univ Roma Tre, Dipartimento Fis, Via Vasca Navale 84, I-00146 Rome, Italy

[6] Univ Ferrara, Dipartimento Fis & Sci Terra, Via Saragat 1, I-44122 Ferrara, Italy

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2019年 / 488卷 / 02期

关键词：

methods: numerical; methods: statistical; galaxies: haloes; cosmological parameters; large-scale structure of Universe; cosmology: theory; OSCILLATION SPECTROSCOPIC SURVEY; LARGE-SCALE STRUCTURE; POWER SPECTRUM; DARK ENERGY; SYSTEMATIC-ERRORS; MATTER; SIMULATIONS; EVOLUTION; GALAXIES; CONSTRAINTS;

D O I：

10.1093/mnras/stz1850

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Modified gravity and massive neutrino cosmologies are two of the most interesting scenarios that have been recently explored to account for possible observational deviations from the concordance Lambda cold dark matter (Lambda CDM) model. In this context, we investigated the large-scale structure of the Universe by exploiting the DUSTGRAIN-pathfinder simulations that implement, simultaneously, the effects of f(R) gravity and massive neutrinos. To study the possibility of breaking the degeneracy between these two effects, we analysed the redshift-space distortions in the clustering of dark matter haloes at different redshifts. Specifically, we focused on the monopole and quadrupole of the two-point correlation function, both in real and redshift space. The deviations with respect to Lambda CDM model have been quantified in terms of the linear growth rate parameter. We found that redshift-space distortions provide a powerful probe to discriminate between Lambda CDM and modified gravity models, especially at high redshifts (z greater than or similar to 1), even in the presence of massive neutrinos.

引用

页码：1987 / 2000

页数：14

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