期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 511, 期 4, 页码 5492-5524出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stac390
关键词
methods: data analysis; cosmological parameters; distance scale; large-scale structure of Universe
资金
- Swiss National Science Foundation (SNF) [200020 175751]
- Tsinghua University
- sino french CNRS-CAS international laboratories LIA Origins
- FCPPL
- National Research Foundation of Korea (NRF) - Korean Ministry of Education, Science, and Technology (MoEST) [2017R1E1A1A01077508, 2020R1A2C1005655]
- U.S. Department of Energy Office of Science User Facility [DE-AC02-05CH11231]
- Alfred P. Sloan Foundation
- U.S. Department of Energy Office of Science
- Center for HighPerformance Computing at the University of Utah
- Brazilian Participation Group
- Carnegie Institution for Science
- Carnegie Mellon University
- Chilean Participation Group
- French Participation Group
- Harvard-Smithsonian Center for Astrophysics
- Instituto de Astrofisica de Canarias
- Johns Hopkins University
- Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo
- Korean Participation Group
- Lawrence Berkeley National Laboratory
- Leibniz Institut fur Astrophysik Potsdam (AIP)
- Max-Planck-Institut fur Astronomie (MPIA Heidelberg)
- Max-Planck-Institut fur Astrophysik (MPA Garching)
- Max-Planck-Institut fur Extraterrestrische Physik (MPE)
- National Astronomical Observatories of China
- New Mexico State University
- New York University
- University of Notre Dame
- Observatario Nacional/MCTI
- Ohio State University
- Pennsylvania State University
- Shanghai Astronomical Observatory
- United Kingdom Participation Group
- Universidad Nacional Autonoma de Mexico
- University of Arizona
- University of Colorado Boulder
- University of Oxford
- University of Portsmouth
- University of Utah
- University of Virginia
- University of Washington
- University of Wisconsin
- Vanderbilt University
- Yale University
- [SEV-2015-0548]
- [RYC2015-18693]
- [AYA2017-89891-P]
- Swiss National Science Foundation (SNF) [200020_175751] Funding Source: Swiss National Science Foundation (SNF)
In this study, cosmic void catalogues were constructed using the DIVE void finder on SDSS BOSS DR12 and eBOSS DR16 galaxy samples with BAO reconstruction. A joint BAO analysis was performed using different types of galaxies and their corresponding voids, and the BAO peak was observed. By combining the clustering of galaxies and voids, improvements in the uncertainties of BAO measurements were achieved, leading to constraints on distance values.
We construct cosmic void catalogues with the DIVE void finder upon SDSS BOSS DR12 and eBOSS DR16 galaxy samples with BAO reconstruction, and perform a joint BAO analysis using different types of galaxies and the corresponding voids. The BAO peak is evident for the galaxy-galaxy, galaxy-void, and void-void correlation functions of all data sets, including the ones cross-correlating LRG and ELG samples. Two multitracer BAO fitting schemes are tested, one combining the galaxy and void correlation functions with a weight applied to voids, and the other using a single BAO dilation parameter for all clustering measurements. Both methods produce consistent results with mock catalogues, and on average similar to 10 per cent improvements of the BAO statistical uncertainties are observed for all samples, compared to the results from galaxies alone. By combining the clustering of galaxies and voids, the uncertainties of BAO measurements from the SDSS data are reduced by 5-15 per cent, yielding 0.9 per cent, 0.8 per cent, 1.1 per cent, 2.3 per cent, and 2.9 per cent constraints on the distance D-V (z), at effective redshifts 0.38, 0.51, 0.70, 0.77, and 0.85, respectively. When combined with BAO measurements from SDSS MGS, QSO, and Lyasamples, as well as the BBN results, we obtain H-0 = 67.58 +/- 0.91 km s(-1) Mpc(-1), Omega(m) = 0.290 +/- 0.015, and Omega(Lambda)h(2) = 0.3241 +/- 0.0079 in the flat-Lambda CDM framework, where the 1 sigma uncertainties are around 6 per cent, 6 per cent, and 17 per cent smaller respectively, compared to constraints from the corresponding anisotropic BAO measurements without voids and LRG-ELG cross-correlations.
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