TY - JOUR
T1 - The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey
T2 - N-body mock challenge for the quasar sample
AU - Smith, Alex
AU - Burtin, Etienne
AU - Hou, Jiamin
AU - Neveux, Richard
AU - Ross, Ashley J.
AU - Alam, Shadab
AU - Brinkmann, Jonathan
AU - Dawson, Kyle S.
AU - Habib, Salman
AU - Heitmann, Katrin
AU - Kneib, Jean Paul
AU - Lyke, Brad W.
AU - Du Mas Des Bourboux, Helion
AU - Mueller, Eva Maria
AU - Myers, Adam D.
AU - Perciva, Will J.
AU - Rossi, Graziano
AU - Schneider, Donald P.
AU - Zarrouk, Pauline
AU - Zhao, Gong Bo
N1 - Publisher Copyright:
© 2020 Oxford University Press. All rights reserved.
PY - 2020/11/1
Y1 - 2020/11/1
N2 - The growth rate and expansion history of the Universe can be measured from large galaxy redshift surveys using the Alcock- Paczynski effect. We validate the Redshift Space Distortion models used in the final analysis of the Sloan Digital Sky Survey (SDSS) extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 16 quasar clustering sample, in configuration and Fourier space, using a series of halo occupation distribution mock catalogues generated using the OuterRim N-body simulation. We test three models on a series of non-blind mocks, in the OuterRim cosmology, and blind mocks, which have been rescaled to new cosmologies, and investigate the effects of redshift smearing and catastrophic redshifts. We find that for the non-blind mocks, the models are able to recover fσ8 to within 3 per cent and αIIand α⊥to within 1 per cent. The scatter in the measurements is larger for the blind mocks, due to the assumption of an incorrect fiducial cosmology. From this mock challenge, we find that all three models perform well, with similar systematic errors on fσ8,αII, and α⊥at the level of σfσ8= 0.013, σαII= 0.012, and σα⊥= 0.008. The systematic error on the combined consensus is σfσ8= 0.011, σαII= 0.008, and σα⊥= 0.005, which is used in the final DR16 analysis. For baryon acoustic oscillation fits in configuration and Fourier space, we take conservative systematic errors of σαII= 0.010 and σα⊥= 0.007.
AB - The growth rate and expansion history of the Universe can be measured from large galaxy redshift surveys using the Alcock- Paczynski effect. We validate the Redshift Space Distortion models used in the final analysis of the Sloan Digital Sky Survey (SDSS) extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 16 quasar clustering sample, in configuration and Fourier space, using a series of halo occupation distribution mock catalogues generated using the OuterRim N-body simulation. We test three models on a series of non-blind mocks, in the OuterRim cosmology, and blind mocks, which have been rescaled to new cosmologies, and investigate the effects of redshift smearing and catastrophic redshifts. We find that for the non-blind mocks, the models are able to recover fσ8 to within 3 per cent and αIIand α⊥to within 1 per cent. The scatter in the measurements is larger for the blind mocks, due to the assumption of an incorrect fiducial cosmology. From this mock challenge, we find that all three models perform well, with similar systematic errors on fσ8,αII, and α⊥at the level of σfσ8= 0.013, σαII= 0.012, and σα⊥= 0.008. The systematic error on the combined consensus is σfσ8= 0.011, σαII= 0.008, and σα⊥= 0.005, which is used in the final DR16 analysis. For baryon acoustic oscillation fits in configuration and Fourier space, we take conservative systematic errors of σαII= 0.010 and σα⊥= 0.007.
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U2 - 10.1093/mnras/staa2825
DO - 10.1093/mnras/staa2825
M3 - Article
AN - SCOPUS:85096910843
SN - 0035-8711
VL - 499
SP - 269
EP - 291
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 1
ER -