Extensive analysis of reconstruction algorithms for DESI 2024 baryon acoustic oscillations
Yale University · Shanghai Jiao Tong University · +68 more institutions
Abstract
Abstract Reconstruction of the baryon acoustic oscillation (BAO) signal has been a standard procedure in BAO analyses over the past decade and has helped to improve the BAO parameter precision by a factor of ∼2 on average. The Dark Energy Spectroscopic Instrument (DESI) BAO analysis for the first year (DR1) data uses the “standard” reconstruction framework, in which the displacement field is estimated from the observed density field by solving the linearized continuity equation in redshift space, and galaxy and random positions are shifted in order to partially remove non-linearities. There are several approaches to solving for the displacement field in real survey data, including the multigrid (MG), iterative…
Citation impact
- FWCI
- 0.00
- Percentile
- 99%
- References
- 0
Authors
67- XCXinyi ChenCorresponding
Yale University
- ZDZ. Ding
Shanghai Jiao Tong University, Shanghai Astronomical Observatory
- EPE. Paillas
University of Arizona, University of Waterloo, Regional Municipality of Waterloo, Large Synoptic Survey Telescope Corporation, Clemson University
- SNS. Nadathur
University of Portsmouth
- HSHee‐Jong Seo
Ohio University
Topics & keywords
- Physics
- Redshift
- Algorithm
- Fast Fourier transform
- Galaxy
- Spectral density
- Astrophysics
- Dark energy
Funding
- NSNational Science FoundationAwards: 12273020, AST-0950945, DE-AC02-05CH11231, 0950945
- UDU.S. Department of EnergyAwards: -AC02-05CH11231, DE-SC0017660, 05CH11231, DE-SC0023241, AC02-05CH11231, DE-AC02, AST-0950945, DE-AC02-05CH11231, AC02-05CH1123, DE-AC02-05CH1123, DE-AC02-
- NANational Aeronautics and Space AdministrationAwards: DE-AC02-05CH11231, NAS5-26555, 80NSSC21K2041
- GAGordon and Betty Moore Foundation
- STSpace Telescope Science InstituteAwards: NAS5-26555, 26555
- NNNational Natural Science Foundation of ChinaAwards: 11621303, 2021-A03, CMS-CSST-2021-A03, 2023YFA1607800, DE-AC02-05CH11231, 12273020
- NSNuclear Safety and Security Commission
- MDMinisterio de Ciencia e Innovación
- CÀCommissariat à l'Énergie Atomique et aux Énergies Alternatives
- OOOffice of ScienceAwards: AC02-05CH11231, -AC02-05CH11231, DE-AC02, 05CH11231, DE-AC02-05CH1123
- SAScience and Technology Facilities CouncilAward: ST/T005009/2
- DODivision of Astronomical SciencesAwards: DE-AC02-05CH11231, AST-0950945
- HEHigh Energy PhysicsAwards: DE-SC0023241, DE-AC02-05CH1123, DE-AC02-05CH11231, DE-SC0017660
- LBLawrence Berkeley National LaboratoryAwards: DE-AC02-05CH11231, DE-AC02-05CH1123, 05CH11231, AC02-05CH11231