Improving constraints on the growth rate of structure by modelling the density-velocity cross-correlation in the 6dF Galaxy Survey

被引：47

作者：

Adams, Caitlin ^{[1
,2
]}

Blake, Chris ^{[1
,2
]}

机构：

[1] Swinburne Univ Technol, Ctr Astrophys & Supercomp, POB 218, Hawthorn, Vic 3122, Australia

[2] Univ Sydney, ARC Ctr Excellence All Sky Astrophys CAASTRO, Sydney, NSW 2006, Australia

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2017年 / 471卷 / 01期

基金：

澳大利亚研究理事会;

关键词：

surveys; cosmological parameters; large-scale structure of Universe; cosmology: observations; BARYON ACOUSTIC-OSCILLATIONS; COSMOLOGICAL PARAMETERS; PECULIAR VELOCITIES; NEXT-GENERATION; IRAS GALAXIES; SCALE; FIELD; SPACE; OMEGA; BIAS;

D O I：

10.1093/mnras/stx1529

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the first simultaneous analysis of the galaxy overdensity and peculiar velocity fields by modelling their cross-covariance. We apply our new maximum-likelihood approach to data from the 6-degree Field Galaxy Survey (6dFGS), which has the largest single collection of peculiar velocities to date. We present a full derivation of the analytic expression for the cross-covariance between the galaxy overdensity and peculiar velocity fields and find direct evidence for a non-zero correlation between the fields on scales up to similar to 50 h(-1) Mpc. When utilizing the cross-covariance, our measurement of the normalized growth rate of structure is f sigma(8)(z = 0) = 0.424(-0.064)(+ 0.067)(15 per cent precision), and our measurement of the redshift-space distortion parameter is beta = 0.341(-0.058) (+0.062) (18 per cent precision). Both measurements improve by similar to 20 per cent compared to only using the autocovariance information. This is consistent with the literature on multiple-tracer approaches, as well as Fisher matrix forecasts and previous analyses of 6dFGS. Our measurement of f sigma(8) is consistent with the standard cosmological model, and we discuss how our approach can be extended to test alternative models of gravity.

引用

页码：839 / 856

页数：18

共 58 条

[1] Peculiar velocities into the next generation: cosmological parameters from large surveys without bias from non-linear structure [J].

Abate, Alexandra ;

Bridle, Sarah ;

Teodoro, Luis F. A. ;

Warren, Michael S. ;

Hendry, Martin .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 389 (04) :1739-1749

[2] Consistency of the growth rate in different environments with the 6-degree Field Galaxy Survey: Measurement of the void-galaxy and galaxy-galaxy correlation functions [J].

Achitouv, I. ;

Blake, C. ;

Carter, P. ;

Koda, J. ;

Beutler, F. .

PHYSICAL REVIEW D, 2017, 95 (08)

[3] Planck 2015 results VIII. High Frequency Instrument data processing: Calibration and maps [J].

Adam, R. ;

Ade, P. A. R. ;

Aghanim, N. ;

Arnaud, M. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartolo, N. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bertincourt, B. ;

Bielewicz, P. ;

Bock, J. J. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chiang, H. C. ;

Christensen, P. R. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Combet, C. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. ;

de Bernardis, P. ;

de Rosa, A. ;

de Zotti, G. ;

Delabrouille, J. ;

Delouis, J. -M. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

[4] The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: baryon acoustic oscillations in the Data Releases 10 and 11 Galaxy samples [J].

Anderson, Lauren ;

Aubourg, Eric ;

Bailey, Stephen ;

Beutler, Florian ;

Bhardwaj, Vaishali ;

Blanton, Michael ;

Bolton, Adam S. ;

Brinkmann, J. ;

Brownstein, Joel R. ;

Burden, Angela ;

Chuang, Chia-Hsun ;

Cuesta, Antonio J. ;

Dawson, Kyle S. ;

Eisenstein, Daniel J. ;

Escoffier, Stephanie ;

Gunn, James E. ;

Guo, Hong ;

Ho, Shirley ;

Honscheid, Klaus ;

Howlett, Cullan ;

Kirkby, David ;

Lupton, Robert H. ;

Manera, Marc ;

Maraston, Claudia ;

McBride, Cameron K. ;

Mena, Olga ;

Montesano, Francesco ;

Nichol, Robert C. ;

Nuza, Sebastian E. ;

Olmstead, Matthew D. ;

Padmanabhan, Nikhil ;

Palanque-Delabrouille, Nathalie ;

Parejko, John ;

Percival, Will J. ;

Petitjean, Patrick ;

Prada, Francisco ;

Price-Whelan, Adrian M. ;

Reid, Beth ;

Roe, Natalie A. ;

Ross, Ashley J. ;

Ross, Nicholas P. ;

Sabiu, Cristiano G. ;

Saito, Shun ;

Samushia, Lado ;

Sanchez, Ariel G. ;

Schlegel, David J. ;

Schneider, Donald P. ;

Scoccola, Claudia G. ;

Seo, Hee-Jong ;

Skibba, Ramin A. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 441 (01) :24-62

[5] New gravitational scales in cosmological surveys [J].

Baker, Tessa ;

Ferreira, Pedro G. ;

Leonard, C. Danielle ;

Motta, Mariele .

PHYSICAL REVIEW D, 2014, 90 (12)

[6] Cosmology without cosmic variance [J].

Bernstein, Gary M. ;

Cai, Yan-Chuan .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 416 (04) :3009-3016

[7] Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples [J].

Betoule, M. ;

Kessler, R. ;

Guy, J. ;

Mosher, J. ;

Hardin, D. ;

Biswas, R. ;

Astier, P. ;

El-Hage, P. ;

Konig, M. ;

Kuhlmann, S. ;

Marriner, J. ;

Pain, R. ;

Regnault, N. ;

Balland, C. ;

Bassett, B. A. ;

Brown, P. J. ;

Campbell, H. ;

Carlberg, R. G. ;

Cellier-Holzern, F. ;

Cinabro, D. ;

Conley, A. ;

D'Andrea, C. B. ;

DePoy, D. L. ;

Doi, M. ;

Ellis, R. S. ;

Fabbro, S. ;

Filippenko, A. V. ;

Foley, R. J. ;

Frieman, J. A. ;

Fouchez, D. ;

Galbany, L. ;

Goobar, A. ;

Gupta, R. R. ;

Hill, G. J. ;

Hlozek, R. ;

Hogan, C. J. ;

Hook, I. M. ;

Howell, D. A. ;

Jha, S. W. ;

Le Guillou, L. ;

Leloudas, G. ;

Lidrnan, C. ;

Marshall, J. L. ;

Moeller, A. ;

Mourao, A. M. ;

Neveu, J. ;

Nichol, R. ;

Olmstead, M. D. ;

Palanque-Delabrouille, N. ;

Perlinutter, S. .

ASTRONOMY & ASTROPHYSICS, 2014, 568

[8] The 6dF Galaxy Survey: z∼ 0 measurements of the growth rate and s8 [J].

Beutler, Florian ;

Blake, Chris ;

Colless, Matthew ;

Jones, D. Heath ;

Staveley-Smith, Lister ;

Poole, Gregory B. ;

Campbell, Lachlan ;

Parker, Quentin ;

Saunders, Will ;

Watson, Fred .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2012, 423 (04) :3430-3444

[9] The 6dF Galaxy Survey: baryon acoustic oscillations and the local Hubble constant [J].

Beutler, Florian ;

Blake, Chris ;

Colless, Matthew ;

Jones, D. Heath ;

Staveley-Smith, Lister ;

Campbell, Lachlan ;

Parker, Quentin ;

Saunders, Will ;

Watson, Fred .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 416 (04) :3017-3032

[10] Galaxy And Mass Assembly (GAMA): improved cosmic growth measurements using multiple tracers of large-scale structure [J].

Blake, Chris ;

Baldry, I. K. ;

Bland-Hawthorn, J. ;

Christodoulou, L. ;

Colless, M. ;

Conselice, C. ;

Driver, S. P. ;

Hopkins, A. M. ;

Liske, J. ;

Loveday, J. ;

Norberg, P. ;

Peacock, J. A. ;

Poole, G. B. ;

Robotham, A. S. G. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2013, 436 (04) :3089-3105

← 1 2 3 4 5 6 →