Baryon acoustic oscillations in the Lyα forest of BOSS quasars

被引：519

作者：

Busca, N. G. ^{[1
]}

Delubac, T. ^{[2
]}

Rich, J. ^{[2
]}

Bailey, S. ^{[3
]}

Font-Ribera, A. ^{[3
,30
]}

Kirkby, D. ^{[4
]}

Le Goff, J-M. ^{[2
]}

Pieri, M. M. ^{[5
]}

Slosar, A. ^{[6
]}

Aubourg, E. ^{[1
]}

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

Bizyaev, D. ^{[7
]}

Blomqvist, M. ^{[4
]}

Bolton, A. S. ^{[8
]}

Bovy, J. ^{[9
]}

Brewington, H. ^{[7
]}

Borde, A. ^{[2
]}

Brinkmann, J. ^{[7
]}

Carithers, B. ^{[3
]}

Croft, R. A. C. ^{[10
]}

Dawson, K. S. ^{[8
]}

Ebelke, G. ^{[7
]}

Eisenstein, D. J. ^{[11
]}

Hamilton, J-C. ^{[1
]}

Ho, S. ^{[10
]}

Hogg, D. W. ^{[12
]}

Honscheid, K. ^{[13
,14
]}

Lee, K-G. ^{[15
]}

Lundgren, B. ^{[16
]}

Malanushenko, E. ^{[7
]}

Malanushenko, V. ^{[7
]}

Margala, D. ^{[4
]}

Maraston, C. ^{[5
]}

Mehta, K. ^{[17
]}

Miralda-Escude, J. ^{[18
,19
]}

Myers, A. D. ^{[20
]}

Nichol, R. C. ^{[5
]}

Noterdaeme, P. ^{[21
,22
]}

Olmstead, M. D. ^{[8
]}

Oravetz, D. ^{[7
]}

Palanque-Delabrouille, N. ^{[2
]}

Pan, K. ^{[7
]}

Paris, I. ^{[21
,22
,31
]}

Percival, W. J. ^{[5
]}

Petitjean, P. ^{[21
,22
]}

Roe, N. A. ^{[3
]}

Rollinde, E. ^{[21
,22
]}

Ross, N. P. ^{[3
]}

Rossi, G. ^{[2
]}

Schlegel, D. J. ^{[3
]}

机构：

[1] Univ Paris 07, CNRS, IN2P3, APC,CEA,Observ Paris, Paris, France

[2] CEA, Ctr Saclay, IRFU, F-91191 Gif Sur Yvette, France

[3] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[4] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[5] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England

[6] Brookhaven Natl Lab, Upton, NY 11973 USA

[7] Apache Point Observ, Sunspot, NM 88349 USA

[8] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA

[9] Inst Adv Study, Princeton, NJ 08540 USA

[10] Carnegie Mellon Univ, Bruce & Astrid McWilliams Ctr Cosmol, Pittsburgh, PA 15213 USA

[11] Harvard Univ, Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[12] NYU, Ctr Cosmol & Particle Phys, New York, NY 10003 USA

[13] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[14] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA

[15] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[16] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA

[17] Univ Arizona, Steward Observ, Tucson, AZ 85121 USA

[18] Inst Catalana Recerca & Estudis Avancats, Barcelona, Spain

[19] Univ Barcelona, IEEC, Inst Ciencies Cosmos, E-08028 Barcelona, Spain

[20] Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA

[21] Univ Paris 06, F-75014 Paris, France

[22] CNRS, Inst Astrophys Paris, F-75014 Paris, France

[23] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA

[24] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA

[25] Osserv Astron Trieste, INAF, I-34131 Trieste, Italy

[26] Natl Inst Nucl Phys, I-34127 Trieste, Italy

[27] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA

[28] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60615 USA

[29] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60615 USA

[30] Univ Zurich, Inst Theoret Phys, CH-8057 Zurich, Switzerland

[31] Univ Chile, Dept Astron, Santiago, Chile

来源：

ASTRONOMY & ASTROPHYSICS | 2013年 / 552卷

基金：

美国安德鲁·梅隆基金会; 美国国家科学基金会;

关键词：

cosmology: observations; dark energy; large-scale structure of Universe; cosmological parameters; DIGITAL SKY SURVEY; HUBBLE-SPACE-TELESCOPE; SMALL-SCALE STRUCTURE; LINE-OF-SIGHT; POWER-SPECTRUM; DATA RELEASE; SPECTROSCOPIC SURVEY; GRAVITATIONAL COLLAPSE; MASS FLUCTUATIONS; TARGET SELECTION;

D O I：

10.1051/0004-6361/201220724

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report a detection of the baryon acoustic oscillation (BAO) feature in the three-dimensional correlation function of the transmitted flux fraction in the Ly alpha forest of high-redshift quasars. The study uses 48 640 quasars in the redshift range 2.1 <= z <= 3.5 from the Baryon Oscillation Spectroscopic Survey (BOSS) of the third generation of the Sloan Digital Sky Survey (SDSS-III). At a mean redshift z = 2.3, we measure the monopole and quadrupole components of the correlation function for separations in the range 20 h(-1) Mpc < r < 200 h(-1) Mpc. A peak in the correlation function is seen at a separation equal to (1.01 +/- 0.03) times the distance expected for the BAO peak within a concordance Lambda CDM cosmology. This first detection of the BAO peak at high redshift, when the universe was strongly matter dominated, results in constraints on the angular diameter distance D-A and the expansion rate H at z = 2.3 that, combined with priors on H-0 and the baryon density, require the existence of dark energy. Combined with constraints derived from cosmic microwave background observations, this result implies H(z = 2.3) = (224 +/- 8) km s(-1) Mpc(-1), indicating that the time derivative of the cosmological scale parameter (a) over dot = H(z = 2.3)/(1 + z) is significantly greater than that measured with BAO at z similar to 0.5. This demonstrates that the expansion was decelerating in the range 0.7 < z < 2.3, as expected from the matter domination during this epoch. Combined with measurements of H-0, one sees the pattern of deceleration followed by acceleration characteristic of a dark-energy dominated universe.

引用

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