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5 results on '"Guy, Julien"'

1. Baryon acoustic oscillations from the cross-correlation of Lyαabsorption and quasars in eBOSS DR14

Author

Blomqvist, Michael, primary, du Mas des Bourboux, Hélion, additional, Busca, Nicolás G., additional, de Sainte Agathe, Victoria, additional, Rich, James, additional, Balland, Christophe, additional, Bautista, Julian E., additional, Dawson, Kyle, additional, Font-Ribera, Andreu, additional, Guy, Julien, additional, Le Goff, Jean-Marc, additional, Palanque-Delabrouille, Nathalie, additional, Percival, Will J., additional, Pérez-Ràfols, Ignasi, additional, Pieri, Matthew M., additional, Schneider, Donald P., additional, Slosar, Anže, additional, and Yèche, Christophe, additional

Published
2019
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2. Baryon acoustic oscillations at z = 2.34 from the correlations of Lyα absorption in eBOSS DR14

Author

de Sainte Agathe, Victoria, primary, Balland, Christophe, additional, du Mas des Bourboux, Hélion, additional, Busca, Nicolás G., additional, Blomqvist, Michael, additional, Guy, Julien, additional, Rich, James, additional, Font-Ribera, Andreu, additional, Pieri, Matthew M., additional, Bautista, Julian E., additional, Dawson, Kyle, additional, Le Goff, Jean-Marc, additional, de la Macorra, Axel, additional, Palanque-Delabrouille, Nathalie, additional, Percival, Will J., additional, Pérez-Ràfols, Ignasi, additional, Schneider, Donald P., additional, Slosar, Anže, additional, and Yèche, Christophe, additional

Published
2019
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3. Baryon acoustic oscillations from the complete SDSS-III Lyα-quasar cross-correlation function at z = 2.4

Author

du Mas des Bourboux, Hélion, primary, Le Goff, Jean-Marc, additional, Blomqvist, Michael, additional, Busca, Nicolás G., additional, Guy, Julien, additional, Rich, James, additional, Yèche, Christophe, additional, Bautista, Julian E., additional, Burtin, Étienne, additional, Dawson, Kyle S., additional, Eisenstein, Daniel J., additional, Font-Ribera, Andreu, additional, Kirkby, David, additional, Miralda-Escudé, Jordi, additional, Noterdaeme, Pasquier, additional, Palanque-Delabrouille, Nathalie, additional, Pâris, Isabelle, additional, Petitjean, Patrick, additional, Pérez-Ràfols, Ignasi, additional, Pieri, Matthew M., additional, Ross, Nicholas P., additional, Schlegel, David J., additional, Schneider, Donald P., additional, Slosar, Anže, additional, Weinberg, David H., additional, and Zarrouk, Pauline, additional

Published
2017
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4. Measurement of baryon acoustic oscillation correlations atz = 2.3 with SDSS DR12 Lyα-Forests

Author

Bautista, Julian E., primary, Busca, Nicolás G., additional, Guy, Julien, additional, Rich, James, additional, Blomqvist, Michael, additional, du Mas des Bourboux, Hélion, additional, Pieri, Matthew M., additional, Font-Ribera, Andreu, additional, Bailey, Stephen, additional, Delubac, Timothée, additional, Kirkby, David, additional, Le Goff, Jean-Marc, additional, Margala, Daniel, additional, Slosar, Anže, additional, Vazquez, Jose Alberto, additional, Brownstein, Joel R., additional, Dawson, Kyle S., additional, Eisenstein, Daniel J., additional, Miralda-Escudé, Jordi, additional, Noterdaeme, Pasquier, additional, Palanque-Delabrouille, Nathalie, additional, Pâris, Isabelle, additional, Petitjean, Patrick, additional, Ross, Nicholas P., additional, Schneider, Donald P., additional, Weinberg, David H., additional, and Yèche, Christophe, additional

Published
2017
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5. Baryon acoustic oscillations from the cross-correlation of Lyα absorption and quasars in eBOSS DR14.

Author

Blomqvist, Michael, du Mas des Bourboux, Hélion, Busca, Nicolás G., de Sainte Agathe, Victoria, Rich, James, Balland, Christophe, Bautista, Julian E., Dawson, Kyle, Font-Ribera, Andreu, Guy, Julien, Le Goff, Jean-Marc, Palanque-Delabrouille, Nathalie, Percival, Will J., Pérez-Ràfols, Ignasi, Pieri, Matthew M., Schneider, Donald P., Slosar, Anže, and Yèche, Christophe

Subjects
QUASARS, COSMIC background radiation, COSMOLOGICAL constant, OSCILLATIONS, ASTRONOMICAL surveys, ABSORPTION
Abstract

We present a measurement of the baryon acoustic oscillation (BAO) scale at redshift z = 2.35 from the three-dimensional correlation of Lyman-α (Lyα) forest absorption and quasars. The study uses 266 590 quasars in the redshift range 1.77 <  z <  3.5 from the Sloan Digital Sky Survey (SDSS) Data Release 14 (DR14). The sample includes the first two years of observations by the SDSS-IV extended Baryon Oscillation Spectroscopic Survey (eBOSS), providing new quasars and re-observations of BOSS quasars for improved statistical precision. Statistics are further improved by including Lyα absorption occurring in the Lyβ wavelength band of the spectra. From the measured BAO peak position along and across the line of sight, we determined the Hubble distance DH and the comoving angular diameter distance DM relative to the sound horizon at the drag epoch rd: DH(z = 2.35)/rd = 9.20 ± 0.36 and DM(z = 2.35)/rd = 36.3 ± 1.8. These results are consistent at 1.5σ with the prediction of the best-fit spatially-flat cosmological model with the cosmological constant reported for the Planck (2016) analysis of cosmic microwave background anisotropies. Combined with the Lyα auto-correlation measurement presented in a companion paper, the BAO measurements at z = 2.34 are within 1.7σ of the predictions of this model. [ABSTRACT FROM AUTHOR]

Published
2019
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