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- W3110341753 abstract "A photometric redshift sample of Luminous Red Galaxies (hereafter LRGs) obtained from The DECam Legacy Survey (DECaLS) is analysed to probe cosmic distances by exploiting the wedge approach of the two-point correlation function. Although the cosmological information is highly contaminated by the uncertainties existing in the photometric redshifts from the galaxy map, an angular diameter distance can be probed at the perpendicular configuration in which the measured correlation function is minimally contaminated. An ensemble of wedged correlation functions selected up to a given threshold based on having the least contamination was studied in the previous work (arXiv:1903.09651v2 [astro-ph.CO]) using simulations, and the extracted cosmological information was unbiased within this threshold. We apply the same methodology for analysing the LRG sample from DECaLS which will provide the optical imaging for targeting two-thirds of the DESI footprint and measure the angular diameter distances at $z=0.69$ and $z=0.87$ to be $D_{A}(0.697)=(1499 pm 77,mathrm{Mpc})(r_{d}/r_{d,fid})$ and $D_{A}(0.874)=(1680 pm 109,mathrm{Mpc})(r_{d}/r_{d,fid})$ with a fractional error of 5.14% and 6.48% respectively. We obtain a value of $H_{0}=67.59pm5.52$ km/s/Mpc which supports the $H_0$ measured by all other BAO results and is consistent with $Lambda$CDM model." @default.
- W3110341753 created "2020-12-07" @default.
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- W3110341753 date "2020-11-01" @default.
- W3110341753 modified "2023-10-17" @default.
- W3110341753 title "Clustering of LRGs in the DECaLS DR8 Footprint: Distance Constraints from Baryon Acoustic Oscillations Using Photometric Redshifts" @default.
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- W3110341753 doi "https://doi.org/10.3847/1538-4357/abc0f0" @default.
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