Non-parametric reconstruction of cosmological matter perturbations

被引：21

作者：

Gonzalez, J. E. ^{[1
]}

Alcaniz, J. S. ^{[1
]}

Carvalho, J. C. ^{[1
]}

机构：

[1] Observ Nacl, Dept Astron, BR-20921400 Rio De Janeiro, RJ, Brazil

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2016年 / 04期

关键词：

dark energy theory; cosmological parameters from LSS; galaxy clustering; DARK ENERGY; CONSTRAINTS; CONSTANT; SUPERNOVA; UNIVERSE; GRAVITY; PARAMETER; LAMBDA; MODELS; BRANE;

D O I：

10.1088/1475-7516/2016/04/016

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Perturbative quantities, such as the growth rate (f) and index (gamma), are powerful tools to distinguish different dark energy models or modified gravity theories even if they produce the same cosmic expansion history. In this work, without any assumption about the dynamics of the Universe, we apply a non-parametric method to current measurements of the expansion rate H(z) from cosmic chronometers and high-z quasar data and reconstruct the growth factor and rate of linearised density perturbations in the non-relativistic matter component. Assuming realistic values for the matter density parameter Omega(m0), as provided by current CMB experiments, we also reconstruct the evolution of the growth index-gamma with redshift. We show that the reconstruction of current H(z) data constrains the growth index to gamma = 0.56 +/- 0.12 (2 sigma) at z = 0.09, which is in full agreement with the prediction of the ACDM model and some of its extensions.

引用

页数：13

共 68 条

[31] The phenomenology of Dvali-Gabadadze-Porrati cosmologies [J].

Lue, A .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2006, 423 (01) :1-48

[32] Nonparametric reconstruction of the cosmic expansion with local regression smoothing and simulation extrapolation [J].

Montiel, Ariadna ;

Lazkoz, Ruth ;

Sendra, Irene ;

Escamilla-Rivera, Celia ;

Salzano, Vincenzo .

PHYSICAL REVIEW D, 2014, 89 (04)

[33] Improved constraints on the expansion rate of the Universe up to z ∼ 1.1 from the spectroscopic evolution of cosmic chronometers [J].

Moresco, M. ;

Cimatti, A. ;

Jimenez, R. ;

Pozzetti, L. ;

Zamorani, G. ;

Bolzonella, M. ;

Dunlop, J. ;

Lamareille, F. ;

Mignoli, M. ;

Pearce, H. ;

Rosati, P. ;

Stern, D. ;

Verde, L. ;

Zucca, E. ;

Carollo, C. M. ;

Contini, T. ;

Kneib, J. -P. ;

Le Fevre, O. ;

Lilly, S. J. ;

Mainieri, V. ;

Renzini, A. ;

Scodeggio, M. ;

Balestra, I. ;

Gobat, R. ;

McLure, R. ;

Bardelli, S. ;

Bongiorno, A. ;

Caputi, K. ;

Cucciati, O. ;

de la Torre, S. ;

de Ravel, L. ;

Franzetti, P. ;

Garilli, B. ;

Iovino, A. ;

Kampczyk, P. ;

Knobel, C. ;

Kovac, K. ;

Le Borgne, J. -F. ;

Le Brun, V. ;

Maier, C. ;

Pello, R. ;

Peng, Y. ;

Perez-Montero, E. ;

Presotto, V. ;

Silverman, J. D. ;

Tanaka, M. ;

Tasca, L. A. M. ;

Tresse, L. ;

Vergani, D. ;

Almaini, O. .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2012, (08)

[34] Raising the bar: new constraints on the Hubble parameter with cosmic chronometers at z ∼ 2 [J].

Moresco, Michele .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 450 (01) :L16-L20

[35] Testing ΛCDM with the growth function δ(a):: Current constraints [J].

Nesseris, S. ;

Perivolaropoulos, L. .

PHYSICAL REVIEW D, 2008, 77 (02)

[36] Accuracy of the growth index in the presence of dark energy perturbations [J].

Nesseris, Savvas ;

Sapone, Domenico .

PHYSICAL REVIEW D, 2015, 92 (02)

[37] Cosmological constant - the weight of the vacuum [J].

Padmanabhan, T .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2003, 380 (5-6) :235-320

[38] The cosmological constant and dark energy [J].

Peebles, PJE ;

Ratra, B .

REVIEWS OF MODERN PHYSICS, 2003, 75 (02) :559-606

[39] TESTS OF COSMOLOGICAL MODELS CONSTRAINED BY INFLATION [J].

PEEBLES, PJE .

ASTROPHYSICAL JOURNAL, 1984, 284 (02) :439-444

[40] Measurements of Ω and Λ from 42 high-redshift supernovae [J].

Perlmutter, S ;

Aldering, G ;

Goldhaber, G ;

Knop, RA ;

Nugent, P ;

Castro, PG ;

Deustua, S ;

Fabbro, S ;

Goobar, A ;

Groom, DE ;

Hook, IM ;

Kim, AG ;

Kim, MY ;

Lee, JC ;

Nunes, NJ ;

Pain, R ;

Pennypacker, CR ;

Quimby, R ;

Lidman, C ;

Ellis, RS ;

Irwin, M ;

McMahon, RG ;

Ruiz-Lapuente, P ;

Walton, N ;

Schaefer, B ;

Boyle, BJ ;

Filippenko, AV ;

Matheson, T ;

Fruchter, AS ;

Panagia, N ;

Newberg, HJM ;

Couch, WJ .

ASTROPHYSICAL JOURNAL, 1999, 517 (02) :565-586

← 1 2 3 4 5 6 7 →