TY - JOUR
T1 - The clustering of the SDSS-IV extended baryon oscillation spectroscopic survey DR16 luminous red galaxy and emission-line galaxy samples
T2 - Cosmic distance and structure growth measurements using multiple tracers in configuration space
AU - Wang, Yuting
AU - Zhao, Gong Bo
AU - Zhao, Cheng
AU - Philcox, Oliver H.E.
AU - Alam, Shadab
AU - Tamone, Amélie
AU - De Mattia, Arnaud
AU - Ross, Ashley J.
AU - Raichoor, Anand
AU - Burtin, Etienne
AU - Paviot, Romain
AU - De La Torre, Sylvain
AU - Percival, Will J.
AU - Dawson, Kyle S.
AU - Gil-Marín, Héctor
AU - Bautista, Julian E.
AU - Hou, Jiamin
AU - Koyama, Kazuya
AU - Peacock, John A.
AU - Ruhlmann-Kleider, Vanina
AU - Bourboux, Hélion Du Mas Des
AU - Chuang, Chia Hsun
AU - Comparat, Johan
AU - Escoffier, Stephanie
AU - Kneib, Jean Paul
AU - Mueller, Eva Maria
AU - Newman, Jeffrey A.
AU - Rossi, Graziano
AU - Shafieloo, Arman
AU - Schneider, Donald P.
N1 - Publisher Copyright:
© 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.
PY - 2020/11/1
Y1 - 2020/11/1
N2 - We perform a multitracer analysis using the complete Sloan Digital Sky Survey IV (SDSS-IV) extended Baryon Oscillation Spectroscopic Survey (eBOSS) DR16 luminous red galaxy (LRG) and the DR16 emission-line galaxy (ELG) samples in the configuration space, and successfully detect a cross-correlation between the two samples, and find the growth rate to be fσ8=0.342 ± 0.085 (∼25 per cent accuracy) from the cross-sample alone. We perform a joint measurement of the baryonic acoustic oscillation (BAO) and redshift space distortion (RSD) parameters at a single effective redshift of zeff = 0.77, using the autocorrelation and cross-correlation functions of the LRG and ELG samples, and find that the comoving angular diameter distance DM(zeff)/rd = 18.85 ± 0.38, the Hubble distance DH(zeff)/rd = 19.64 ± 0.57, and fσ8(zeff) = 0.432 ± 0.038, which is consistent with a ΛCDM model at $68{\ \rm per\ cent}$ CL. Compared to the single-tracer analysis on the LRG sample, the Figure of Merit of α⊙, α⊙, andfσ8 is improved by a factor of 1.11 in our multitracer analysis, and in particular, the statistical uncertainty of fσ8 is reduced by 11.6%.
AB - We perform a multitracer analysis using the complete Sloan Digital Sky Survey IV (SDSS-IV) extended Baryon Oscillation Spectroscopic Survey (eBOSS) DR16 luminous red galaxy (LRG) and the DR16 emission-line galaxy (ELG) samples in the configuration space, and successfully detect a cross-correlation between the two samples, and find the growth rate to be fσ8=0.342 ± 0.085 (∼25 per cent accuracy) from the cross-sample alone. We perform a joint measurement of the baryonic acoustic oscillation (BAO) and redshift space distortion (RSD) parameters at a single effective redshift of zeff = 0.77, using the autocorrelation and cross-correlation functions of the LRG and ELG samples, and find that the comoving angular diameter distance DM(zeff)/rd = 18.85 ± 0.38, the Hubble distance DH(zeff)/rd = 19.64 ± 0.57, and fσ8(zeff) = 0.432 ± 0.038, which is consistent with a ΛCDM model at $68{\ \rm per\ cent}$ CL. Compared to the single-tracer analysis on the LRG sample, the Figure of Merit of α⊙, α⊙, andfσ8 is improved by a factor of 1.11 in our multitracer analysis, and in particular, the statistical uncertainty of fσ8 is reduced by 11.6%.
UR - https://www.scopus.com/pages/publications/85096148742
UR - https://www.scopus.com/pages/publications/85096148742#tab=citedBy
U2 - 10.1093/mnras/staa2593
DO - 10.1093/mnras/staa2593
M3 - Article
AN - SCOPUS:85096148742
SN - 0035-8711
VL - 498
SP - 3470
EP - 3483
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -