Power Spectrum Multipoles
Power Spectrum Post-reconstruction
The power spectrum (the two-point correlation function in Fourier space) is the main statistics used to extract cosmological information from galaxy surveys. In redshift space it is usually described through its Legendre multipole expansion: the monopole, quadrupole and hexadecapole (Gil-Marin et al. 2020).
Here we provide the power spectrum and derived quantities from the Baryon Oscillation Spectroscopic Survey (BOSS+eBOSS) Data Release 16, galaxy sample, within the redshift bin, (0.6 <z<1.0), which contains 377,458 galaxies with an effective redshift of 0.70 (Ross et al. 2020). These measurements set constraints on the product of the growth of structure parameter f, and the amplitude of dark matter density fluctuations, σ8, along with the geometric Alcock-Paczynski parameters, the product of the Hubble constant and the comoving sound horizon at the baryon drag epoch, and the angular distance parameter divided by the sound horizon. Note that the official measurement used in eBOSS collaboration et al. 2020 on this redshift bin, also contains information from the 2-point correlation function (Bautista et al. 2020), which is not provided here.
Power Spectrum Multipoles
Power Spectrum Post-reconstruction
The public files contain the power spectrum measurements on DR16 BOSS+eBOSS LRG sample, for the NGC and SGC, for both data, Nseries mocks and EZmocks mocks. These catalogues and measurements are described in Gil-Marin et al. 2020, Zhao et al. 2020 and Ross et al. 2020, and are used in eBOSS collaboration et al. 2020 for cosmology interpretation.
We make publicly available the best-fitting values of α-parallel and α-perpendicular measurements, along with fσ8 using the modeling described in the above papers, for both DR16 data and 1000 EZmocks, catalogues, pre-recon analysis, post-recon analysis and simultaneous fit. Additionally we also provide the covariance for all these fits. Please read carefully the readme file provided along with the files in the links below,
Full Shape (or RSD) analysis of the pre-reconstructed catalogues, using the power spectrum monopole, quadrupole and hexadecapole. We report α-parallel, α-perpendicular f, along with their covariance. Note that f (and its covariance terms) must be rescaled either with σ8_fid or by σ8_fid_resc (recommended), which we also provide, in order to obtain fσ8, which is the meaningful quantity.
Simultaneous Full Shape pre-recon analysis and BAO post-recon analysis using the power spectrum monopole (pre- and post-), quadrupole (pre- and post-), and hexadecapole (pre-). We report α-parallel, α-perpendicular f, along with their covariance. Note that f (and its covariance terms) must be rescaled either with σ8_fid or by σ8_fid_resc (recommended), which we also provide, in order to obtain fσ8, which is the meaningful quantity.
For the RSD and BAO analyses the reference template cosmology is the one described in sec 2.3 (Table 1) of the Gil-Marin et al. 2020 paper, and correspond to the following CAMB files,
In addition to the fits on the DR16 LRG data and EZmocks, we provide below also the fits on the 84 Nseries mocks, used to test systematics.
Full Shape (or RSD) analysis of the pre-reconstructed catalogues, using the power spectrum monopole, quadrupole and hexadecapole. We report α-parallel, α-perpendicular f, along with their covariance. Note that f (and its covariance terms) must be rescaled either with σ8_fid or by σ8_fid_resc (recommended), which we also provide, in order to obtain fσ8, which is the meaningful quantity.
Simultaneous Full Shape pre-recon analysis and BAO post-recon analysis using the power spectrum monopole (pre- and post-), quadrupole (pre- and post-), and hexadecapole (pre-). We report α-parallel, α-perpendicular f, along with their covariance. Note that f (and its covariance terms) must be rescaled either with σ8_fid or by σ8_fid_resc (recommended), which we also provide, in order to obtain fσ8, which is the meaningful quantity.
More public eBOSS products (including partially the products available also on this site) can be found in the official eBOSS public pages. For citing policies please check How to cite SDSS, and in particular please add in your paper the Official SDSS-IV Acknowledgment.
Hector Gil-Marin, 16th Oct. 2020.
