Baryon acoustic oscillations in the Ly α forest of BOSS quasars*

N. G. Busca, T. Delubac, J. Rich, S. Bailey, A. Font-Ribera, D. Kirkby, J. M. Le Goff, M. M. Pieri, A. Slosar, É Aubourg, J. E. Bautista, D. Bizyaev, M. Blomqvist, A. S. Bolton, J. Bovy, H. Brewington, A. Borde, J. Brinkmann, B. Carithers, R. A C Croft & 42 others K. S. Dawson, G. Ebelke, D. J. Eisenstein, J. C. Hamilton, S. Ho, D. W. Hogg, K. Honscheid, K. G. Lee, B. Lundgren, E. Malanushenko, V. Malanushenko, D. Margala, C. Maraston, K. Mehta, J. Miralda-Escudé, A. D. Myers, R. C. Nichol, P. Noterdaeme, M. D. Olmstead, D. Oravetz, N. Palanque-Delabrouille, K. Pan, I. Pâris, W. J. Percival, P. Petitjean, N. A. Roe, E. Rollinde, N. P. Ross, G. Rossi, D. J. Schlegel, D. P. Schneider, A. Shelden, E. S. Sheldon, A. Simmons, S. Snedden, J. L. Tinker, M. Viel, B. A. Weaver, D. H. Weinberg, M. White, C. Yèche, D. G. York

    Research output: Contribution to journalArticle

    Abstract

    We report a detection of the baryon acoustic oscillation (BAO) feature in the three-dimensional correlation function of the transmitted flux fraction in the Lya 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 .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 DA and the expansion rate H at z = 2.3 that, combined with priors on H0 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 = H(z = 2.3)/(1 + z) is significantly greater than that measured with BAO at z ∼ 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 H0, one sees the pattern of deceleration followed by acceleration characteristic of a dark-energy dominated universe.

    Original languageEnglish (US)
    Article numberA96
    JournalAstronomy and Astrophysics
    Volume552
    DOIs
    StatePublished - 2013

    Fingerprint

    quasars
    baryons
    acoustics
    oscillation
    oscillations
    dark energy
    universe
    cosmology
    expansion
    deceleration
    energy
    monopoles
    quadrupoles
    time measurement
    microwaves
    detection

    Keywords

    • Cosmological parameters
    • Cosmology: observations
    • Dark energy
    • Large-scale structure of Universe

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    Busca, N. G., Delubac, T., Rich, J., Bailey, S., Font-Ribera, A., Kirkby, D., ... York, D. G. (2013). Baryon acoustic oscillations in the Ly α forest of BOSS quasars*. Astronomy and Astrophysics, 552, [A96]. https://doi.org/10.1051/0004-6361/201220724

    Baryon acoustic oscillations in the Ly α forest of BOSS quasars*. / Busca, N. G.; Delubac, T.; Rich, J.; Bailey, S.; Font-Ribera, A.; Kirkby, D.; Le Goff, J. M.; Pieri, M. M.; Slosar, A.; Aubourg, É; Bautista, J. E.; Bizyaev, D.; Blomqvist, M.; Bolton, A. S.; Bovy, J.; Brewington, H.; Borde, A.; Brinkmann, J.; Carithers, B.; Croft, R. A C; Dawson, K. S.; Ebelke, G.; Eisenstein, D. J.; Hamilton, J. C.; Ho, S.; Hogg, D. W.; Honscheid, K.; Lee, K. G.; Lundgren, B.; Malanushenko, E.; Malanushenko, V.; Margala, D.; Maraston, C.; Mehta, K.; Miralda-Escudé, J.; Myers, A. D.; Nichol, R. C.; Noterdaeme, P.; Olmstead, M. D.; Oravetz, D.; Palanque-Delabrouille, N.; Pan, K.; Pâris, I.; Percival, W. J.; Petitjean, P.; Roe, N. A.; Rollinde, E.; Ross, N. P.; Rossi, G.; Schlegel, D. J.; Schneider, D. P.; Shelden, A.; Sheldon, E. S.; Simmons, A.; Snedden, S.; Tinker, J. L.; Viel, M.; Weaver, B. A.; Weinberg, D. H.; White, M.; Yèche, C.; York, D. G.

    In: Astronomy and Astrophysics, Vol. 552, A96, 2013.

    Research output: Contribution to journalArticle

    Busca, NG, Delubac, T, Rich, J, Bailey, S, Font-Ribera, A, Kirkby, D, Le Goff, JM, Pieri, MM, Slosar, A, Aubourg, É, Bautista, JE, Bizyaev, D, Blomqvist, M, Bolton, AS, Bovy, J, Brewington, H, Borde, A, Brinkmann, J, Carithers, B, Croft, RAC, Dawson, KS, Ebelke, G, Eisenstein, DJ, Hamilton, JC, Ho, S, Hogg, DW, Honscheid, K, Lee, KG, Lundgren, B, Malanushenko, E, Malanushenko, V, Margala, D, Maraston, C, Mehta, K, Miralda-Escudé, J, Myers, AD, Nichol, RC, Noterdaeme, P, Olmstead, MD, Oravetz, D, Palanque-Delabrouille, N, Pan, K, Pâris, I, Percival, WJ, Petitjean, P, Roe, NA, Rollinde, E, Ross, NP, Rossi, G, Schlegel, DJ, Schneider, DP, Shelden, A, Sheldon, ES, Simmons, A, Snedden, S, Tinker, JL, Viel, M, Weaver, BA, Weinberg, DH, White, M, Yèche, C & York, DG 2013, 'Baryon acoustic oscillations in the Ly α forest of BOSS quasars*', Astronomy and Astrophysics, vol. 552, A96. https://doi.org/10.1051/0004-6361/201220724
    Busca, N. G. ; Delubac, T. ; Rich, J. ; Bailey, S. ; Font-Ribera, A. ; Kirkby, D. ; Le Goff, J. M. ; Pieri, M. M. ; Slosar, A. ; Aubourg, É ; Bautista, J. E. ; Bizyaev, D. ; Blomqvist, M. ; Bolton, A. S. ; Bovy, J. ; Brewington, H. ; Borde, A. ; Brinkmann, J. ; Carithers, B. ; Croft, R. A C ; Dawson, K. S. ; Ebelke, G. ; Eisenstein, D. J. ; Hamilton, J. C. ; Ho, S. ; Hogg, D. W. ; Honscheid, K. ; Lee, K. G. ; Lundgren, B. ; Malanushenko, E. ; Malanushenko, V. ; Margala, D. ; Maraston, C. ; Mehta, K. ; Miralda-Escudé, J. ; Myers, A. D. ; Nichol, R. C. ; Noterdaeme, P. ; Olmstead, M. D. ; Oravetz, D. ; Palanque-Delabrouille, N. ; Pan, K. ; Pâris, I. ; Percival, W. J. ; Petitjean, P. ; Roe, N. A. ; Rollinde, E. ; Ross, N. P. ; Rossi, G. ; Schlegel, D. J. ; Schneider, D. P. ; Shelden, A. ; Sheldon, E. S. ; Simmons, A. ; Snedden, S. ; Tinker, J. L. ; Viel, M. ; Weaver, B. A. ; Weinberg, D. H. ; White, M. ; Yèche, C. ; York, D. G. / Baryon acoustic oscillations in the Ly α forest of BOSS quasars*. In: Astronomy and Astrophysics. 2013 ; Vol. 552.
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    title = "Baryon acoustic oscillations in the Ly α forest of BOSS quasars*",
    abstract = "We report a detection of the baryon acoustic oscillation (BAO) feature in the three-dimensional correlation function of the transmitted flux fraction in the Lya 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 .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 DA and the expansion rate H at z = 2.3 that, combined with priors on H0 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 = H(z = 2.3)/(1 + z) is significantly greater than that measured with BAO at z ∼ 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 H0, one sees the pattern of deceleration followed by acceleration characteristic of a dark-energy dominated universe.",
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    TY - JOUR

    T1 - Baryon acoustic oscillations in the Ly α forest of BOSS quasars*

    AU - Busca, N. G.

    AU - Delubac, T.

    AU - Rich, J.

    AU - Bailey, S.

    AU - Font-Ribera, A.

    AU - Kirkby, D.

    AU - Le Goff, J. M.

    AU - Pieri, M. M.

    AU - Slosar, A.

    AU - Aubourg, É

    AU - Bautista, J. E.

    AU - Bizyaev, D.

    AU - Blomqvist, M.

    AU - Bolton, A. S.

    AU - Bovy, J.

    AU - Brewington, H.

    AU - Borde, A.

    AU - Brinkmann, J.

    AU - Carithers, B.

    AU - Croft, R. A C

    AU - Dawson, K. S.

    AU - Ebelke, G.

    AU - Eisenstein, D. J.

    AU - Hamilton, J. C.

    AU - Ho, S.

    AU - Hogg, D. W.

    AU - Honscheid, K.

    AU - Lee, K. G.

    AU - Lundgren, B.

    AU - Malanushenko, E.

    AU - Malanushenko, V.

    AU - Margala, D.

    AU - Maraston, C.

    AU - Mehta, K.

    AU - Miralda-Escudé, J.

    AU - Myers, A. D.

    AU - Nichol, R. C.

    AU - Noterdaeme, P.

    AU - Olmstead, M. D.

    AU - Oravetz, D.

    AU - Palanque-Delabrouille, N.

    AU - Pan, K.

    AU - Pâris, I.

    AU - Percival, W. J.

    AU - Petitjean, P.

    AU - Roe, N. A.

    AU - Rollinde, E.

    AU - Ross, N. P.

    AU - Rossi, G.

    AU - Schlegel, D. J.

    AU - Schneider, D. P.

    AU - Shelden, A.

    AU - Sheldon, E. S.

    AU - Simmons, A.

    AU - Snedden, S.

    AU - Tinker, J. L.

    AU - Viel, M.

    AU - Weaver, B. A.

    AU - Weinberg, D. H.

    AU - White, M.

    AU - Yèche, C.

    AU - York, D. G.

    PY - 2013

    Y1 - 2013

    N2 - We report a detection of the baryon acoustic oscillation (BAO) feature in the three-dimensional correlation function of the transmitted flux fraction in the Lya 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 .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 DA and the expansion rate H at z = 2.3 that, combined with priors on H0 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 = H(z = 2.3)/(1 + z) is significantly greater than that measured with BAO at z ∼ 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 H0, one sees the pattern of deceleration followed by acceleration characteristic of a dark-energy dominated universe.

    AB - We report a detection of the baryon acoustic oscillation (BAO) feature in the three-dimensional correlation function of the transmitted flux fraction in the Lya 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 .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 DA and the expansion rate H at z = 2.3 that, combined with priors on H0 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 = H(z = 2.3)/(1 + z) is significantly greater than that measured with BAO at z ∼ 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 H0, one sees the pattern of deceleration followed by acceleration characteristic of a dark-energy dominated universe.

    KW - Cosmological parameters

    KW - Cosmology: observations

    KW - Dark energy

    KW - Large-scale structure of Universe

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