The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: a tomographic measurement of cosmic structure growth and expansion rate based on optimal redshift weights

• DOI: 10.1093/mnras/sty2845
• Publication Date: 2018-10-25T22:35:12Z
• Authors: Gong-Bo Zhao; Yuting Wang; Shun Saito; Héctor Gil-Marín; Will J Percival; Dandan Wang; Chia-Hsun Chuang; Rossana Ruggeri; Eva-Maria Mueller; Fangzhou Zhu; Ashley J Ross; Rita Tojeiro; Isabelle Pâris; Adam D Myers; Jeremy L Tinker; Jian Li; Etienne Burtin; Pauline Zarrouk; Florian Beutler; Falk Baumgarten; Julian E Bautista; Joel R Brownstein; Kyle S Dawson; Jiamin Hou; Axel de la Macorra; Graziano Rossi; John A Peacock; Ariel G Sánchez; Arman Shafieloo; Donald P Schneider; Cheng Zhao
• Keywords: Oscillation (cell signaling); Sample (material)

We develop a new method, which is based on the optimal redshift weighting scheme, to extract maximal tomographic information of baryonic acoustic oscillations (BAO) and space distortions (RSD) from extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 14 quasar (DR14Q) survey. validate our method using Extended Zel'dovich mocks, apply pipeline eBOSS DR14Q sample in range 0.8 < |$z$| 2.2. report joint measurement fσ8 two-dimensional BAO parameters DA H at four effective redshifts |$z$|eff = 0.98, 1.23, 1.52, 1.94, provide full data covariance matrix. Using combined with BOSS DR12, Main Galaxy Sample (MGS), 6 degree Field (6dFGS) measurements, we find that existence dark energy supported by observations 7.4σ significance level. Combining DR12 Planck observations, constrain gravitational growth index be γ 0.580 ± 0.082, fully consistent prediction general relativity. This paper part set analyses DR14 sample.