• DOI:10.1093/mnras/sty3395
• Corpus ID: 119333865

The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measuring the evolution of the growth rate using redshift-space distortions between redshift 0.8 and 2.2

@article{Ruggeri2018TheCO,
  title={The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measuring the evolution of the growth rate using redshift-space distortions between redshift 0.8 and 2.2},
  author={Rossana Ruggeri and Will J Percival and H{\'e}ctor Gil-Mar{\'i}n and Florian Beutler and Eva-Maria Mueller and Fangzhou Zhu and Nikhil Padmanabhan and Gong-Bo Zhao and Pauline Zarrouk and Ariel G. S{\'a}nchez and Julian E. Bautista and Jonathan Brinkmann and Joel R. Brownstein and Falk Baumgarten and Chia-Hsun Chuang and Kyle S. Dawson and Hee-Jong Seo and Rita Tojeiro and Cheng Zhao},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2018}
}

• R. Ruggeri, W. Percival, +16 authors Cheng Zhao
• Published 9 January 2018
• Physics
• Monthly Notices of the Royal Astronomical Society

We measure the growth rate and its evolution using the anisotropic clustering of the extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 14 (DR14) quasar sample, which includes |$148\, 659$| quasars covering the wide redshift range of 0.8 < z < 2.2 and a sky area of |$2112.90\, \rm deg^2$|⁠. To optimize measurements we deploy a redshift-dependent weighting scheme, which allows us to avoid binning and perform the data analysis consistently including the redshift evolution across the sample. We perform the analysis in Fourier space, and use the redshift evolving power spectrum multipoles to measure the redshift-space distortion parameter fσ_8 and parameters controlling the anisotropic projection of the cosmological perturbations. We measure fσ_8(z = 1.52) = 0.43 ± 0.05 and dfσ_8/dz(z = 1.52) = −0.16 ± 0.08, consistent with the expectation for a lambda cold dark matter cosmology as constrained by the Planck experiment.