{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/the-clustering-of-the-sdss-iv-extended-baryon","title":"The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR16 luminous red galaxy and emission line galaxy samples: cosmic distance and structure growth measurements using multiple tracers in configuration space","arxiv_id":"2007.09010","date":"2020-07-17","proceeding":null,"authors":["Yuting Wang","Gong-Bo Zhao","Cheng Zhao","Oliver H. E. Philcox","Shadab Alam","Amélie Tamone","Arnaud de Mattia","Ashley J. Ross","Anand Raichoor","Etienne Burtin","Romain Paviot","Sylvain de la Torre","Will J. Percival","Kyle S. Dawson","Héctor Gil-Marín","Julian E. Bautista","Jiamin Hou","Kazuya Koyama","John A. Peacock","Vanina Ruhlmann-Kleider","Hélion du Mas des Bourboux","Johan Comparat","Stephanie Escoffier","Eva-Maria Mueller","Jeffrey A. Newman","Graziano Rossi","Arman Shafieloo","Donald P. Schneider"],"abstract":"We perform a multi-tracer 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 $f\\sigma_8=0.342 \\pm 0.085$ ($\\sim25$ 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 $z_{\\rm eff}= 0.77$, using the auto- and cross-correlation functions of the LRG and ELG samples, and find that the comoving angular diameter distance $D_M(z_{\\rm eff})/r_d = 18.85\\pm 0.38$, the Hubble distance $D_H(z_{\\rm eff})/r_d = 19.64 \\pm 0.57$, and $f\\sigma_8(z_{\\rm eff}) = 0.432 \\pm 0.038$, which is consistent with a $\\Lambda$CDM model at $68\\%$ CL. Compared to the single-tracer analysis on the LRG sample, the Figure of Merit (FoM) of $\\alpha_{\\perp}, \\alpha_{||}$ and $f\\sigma_8$ is improved by a factor of $1.11$ in our multi-tracer analysis, and in particular, the statistical uncertainty of $f\\sigma_8$ is reduced by $11.6 \\%$.","url_abs":"https://arxiv.org/abs/2007.09010v4","url_pdf":"https://arxiv.org/pdf/2007.09010v4.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"the-clustering-of-the-sdss-iv-extended-baryon","repo_url":"https://github.com/ytcosmo/MultiTracerBAORSD","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":1,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}