KMS National Astronomical Observatories, CAS
| Recombination-independent Determination of the Sound Horizon and the Hubble Constant from BAO | |
| Pogosian, Levon1; Zhao, Gong-Bo2,3; Jedamzik, Karsten4 | |
| 2020-12-01 | |
| Source Publication | ASTROPHYSICAL JOURNAL LETTERS
 |
| ISSN | 2041-8205 |
| Volume | 904Issue:2Pages:6 |
| Abstract | The Hubble tension and attempts to resolve it by modifying the physics of (or at) recombination motivate finding ways to determine H-0 and the sound horizon at the epoch of baryon decoupling r(d) in ways that rely neither on a recombination model nor on late-time Hubble data. In this work, we investigate what one can learn from the current and future BAO data when treating r(d) and H-0 as independent free parameters. It is well known that baryon acoustic oscillations (BAOs) give exquisite constraints on the product r(d)H(0). We show here that imposing a moderate prior on omega(m)h(2) breaks the degeneracy between r(d) and H-0. Using the latest BAO data, including the recently released the extended Baryon Oscillation Spectroscopic Survey Data Release 16, along with a omega(m)h(2) prior based on the Planck best-fit ? cold dark matter (?CDM) model, we find r(d) = 143.7 2.7 Mpc and H-0 = 69.6 1.8 km s(-1) Mpc(-1). BAO data prefers somewhat lower r(d) and higher H-0 than those inferred from Planck data in a ?CDM model. We find similar values when combing BAO with the Pantheon supernovae, the Dark Energy Survey Year 1 galaxy weak lensing, Planck or SPTPol cosmic microwave background lensing, and the cosmic chronometer data. We perform a forecast for the Dark Energy Spectroscopic Instrument (DESI) and find that, when aided with a moderate prior on omega(m)h(2), DESI will measure r(d) and H-0 without assuming a recombination model with an accuracy surpassing the current best estimates from Planck. |
| Keyword | Cosmology Baryon acoustic oscillations Hubble constant Recombination (cosmology) |
| Funding Organization | WestGrid ; WestGrid ; Compute Canada Calcul Canada ; Compute Canada Calcul Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; Chinese Academy of Sciences President's International Fellowship Initiative ; Chinese Academy of Sciences President's International Fellowship Initiative ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; NSFC ; NSFC ; WestGrid ; WestGrid ; Compute Canada Calcul Canada ; Compute Canada Calcul Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; Chinese Academy of Sciences President's International Fellowship Initiative ; Chinese Academy of Sciences President's International Fellowship Initiative ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; NSFC ; NSFC ; WestGrid ; WestGrid ; Compute Canada Calcul Canada ; Compute Canada Calcul Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; Chinese Academy of Sciences President's International Fellowship Initiative ; Chinese Academy of Sciences President's International Fellowship Initiative ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; NSFC ; NSFC ; WestGrid ; WestGrid ; Compute Canada Calcul Canada ; Compute Canada Calcul Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; Chinese Academy of Sciences President's International Fellowship Initiative ; Chinese Academy of Sciences President's International Fellowship Initiative ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; NSFC ; NSFC |
| DOI | 10.3847/2041-8213/abc6a8 |
| WOS Keyword | BARYON ACOUSTIC-OSCILLATIONS ; CONSTRAINTS ; GALAXIES |
| Language | 英语 |
| Funding Project | WestGrid ; Compute Canada Calcul Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; Chinese Academy of Sciences President's International Fellowship Initiative[2020VMA0020] ; National Key Basic Research and Development Program of China[2018YFA0404503] ; CAS Interdisciplinary Innovation Team ; NSFC[11925303] ; NSFC[11720101004] ; NSFC[11673025] ; NSFC[11890691] |
| Funding Organization | WestGrid ; WestGrid ; Compute Canada Calcul Canada ; Compute Canada Calcul Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; Chinese Academy of Sciences President's International Fellowship Initiative ; Chinese Academy of Sciences President's International Fellowship Initiative ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; NSFC ; NSFC ; WestGrid ; WestGrid ; Compute Canada Calcul Canada ; Compute Canada Calcul Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; Chinese Academy of Sciences President's International Fellowship Initiative ; Chinese Academy of Sciences President's International Fellowship Initiative ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; NSFC ; NSFC ; WestGrid ; WestGrid ; Compute Canada Calcul Canada ; Compute Canada Calcul Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; Chinese Academy of Sciences President's International Fellowship Initiative ; Chinese Academy of Sciences President's International Fellowship Initiative ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; NSFC ; NSFC ; WestGrid ; WestGrid ; Compute Canada Calcul Canada ; Compute Canada Calcul Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; National Sciences and Engineering Research Council (NSERC) of Canada ; Chinese Academy of Sciences President's International Fellowship Initiative ; Chinese Academy of Sciences President's International Fellowship Initiative ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; NSFC ; NSFC |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000592350800001 |
| Publisher | IOP PUBLISHING LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.bao.ac.cn/handle/114a11/81156 |
| Collection | 中国科学院国家天文台 |
| Corresponding Author | Pogosian, Levon |
| Affiliation | 1.Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Montpellier, CNRS, UMR5299, Lab Univers & Particules Montpellier, F-34095 Montpellier, France |
| Recommended Citation GB/T 7714 | Pogosian, Levon,Zhao, Gong-Bo,Jedamzik, Karsten. Recombination-independent Determination of the Sound Horizon and the Hubble Constant from BAO[J]. ASTROPHYSICAL JOURNAL LETTERS,2020,904(2):6. |
| APA | Pogosian, Levon,Zhao, Gong-Bo,&Jedamzik, Karsten.(2020).Recombination-independent Determination of the Sound Horizon and the Hubble Constant from BAO.ASTROPHYSICAL JOURNAL LETTERS,904(2),6. |
| MLA | Pogosian, Levon,et al."Recombination-independent Determination of the Sound Horizon and the Hubble Constant from BAO".ASTROPHYSICAL JOURNAL LETTERS 904.2(2020):6. |
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