TY - JOUR
T1 - The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample:
T2 - a tomographic measurement of cosmic structure growth and expansion rate based on optimal redshift weights
AU - GONGBO, ZHAO
AU - Wang, Yuting
AU - Saito, Shun
AU - Gil-Marín, Héctor
AU - Percival, Will
AU - Wang, Dandan
AU - Chuang, Chia Hsun
AU - Ruggeri, Rossana
AU - Mueller, Eva-Maria
AU - Zhu, Fangzhou
AU - Ross, Ashley J.
AU - Tojeiro, Rita
AU - Pâris, Isabelle
AU - Myers, Adam D.
AU - Tinker, Jeremy L.
AU - Li, Jian
AU - Burtin, Etienne
AU - Zarrouk, Pauline
AU - Beutler, Florian
AU - Baumgarten, Falk
AU - Bautista, Julian
AU - Brownstein, Joel R.
AU - Dawson, Kyle S.
AU - Hou, Jiamin
AU - Macorra, Axel De La
AU - Rossi, Graziano
AU - Peacock, John A.
AU - Sánchez, Ariel G.
AU - Shafieloo, Arman
AU - Schneider, Donald P.
AU - Zhao, Cheng
PY - 2019/1/1
Y1 - 2019/1/1
N2 - We develop a new method, which is based on the optimal redshift weighting scheme, to extract the maximal tomographic information of baryonic acoustic oscillations (BAO) and redshift space distortions (RSD) from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 14 quasar (DR14Q) survey. We validate our method using the Extended Zel'dovich mocks, and apply our pipeline to the eBOSS DR14Q sample in the redshift range of 0.8 < z < 2.2. We report a joint measurement of fσ8 and two-dimensional BAO parameters DA and H at four effective redshifts of zeff = 0.98, 1.23, 1.52, and 1.94, and provide the full data covariance matrix. Using our measurement combined with BOSS DR12, Main Galaxy Sample (MGS), and 6 degree Field Galaxy Survey (6dFGS) BAO measurements, we find that the existence of dark energy is supported by observations at a 7.4σ significance level. Combining our measurement with BOSS DR12 and Planck observations, we constrain the gravitational growth index to be γ = 0.580 ± 0.082, which is fully consistent with the prediction of general relativity. This paper is part of a set that analyses the eBOSS DR14 quasar sample.
AB - We develop a new method, which is based on the optimal redshift weighting scheme, to extract the maximal tomographic information of baryonic acoustic oscillations (BAO) and redshift space distortions (RSD) from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 14 quasar (DR14Q) survey. We validate our method using the Extended Zel'dovich mocks, and apply our pipeline to the eBOSS DR14Q sample in the redshift range of 0.8 < z < 2.2. We report a joint measurement of fσ8 and two-dimensional BAO parameters DA and H at four effective redshifts of zeff = 0.98, 1.23, 1.52, and 1.94, and provide the full data covariance matrix. Using our measurement combined with BOSS DR12, Main Galaxy Sample (MGS), and 6 degree Field Galaxy Survey (6dFGS) BAO measurements, we find that the existence of dark energy is supported by observations at a 7.4σ significance level. Combining our measurement with BOSS DR12 and Planck observations, we constrain the gravitational growth index to be γ = 0.580 ± 0.082, which is fully consistent with the prediction of general relativity. This paper is part of a set that analyses the eBOSS DR14 quasar sample.
UR - https://researchportal.port.ac.uk/portal/en/publications/the-clustering-of-the-sdssiv-extended-baryon-oscillation-spectroscopic-survey-dr14-quasar-sample(c461d540-5d98-4dfa-8434-2e6869efe013).html
U2 - 10.1093/mnras/sty2845
DO - 10.1093/mnras/sty2845
M3 - Article
SN - 0035-8711
VL - 482
SP - 3497
EP - 3513
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -