Wuzheng Guo, Qiumin Wang, Shuo Cao, Marek Biesiada, Tonghua Liu, Yujie Lian, Xinyue Jiang, Chengsheng Mu and Dadian Cheng
{"title":"Newest Measurements of Hubble Constant from DESI 2024 Baryon Acoustic Oscillation Observations","authors":"Wuzheng Guo, Qiumin Wang, Shuo Cao, Marek Biesiada, Tonghua Liu, Yujie Lian, Xinyue Jiang, Chengsheng Mu and Dadian Cheng","doi":"10.3847/2041-8213/ada37f","DOIUrl":null,"url":null,"abstract":"In this Letter, we use the latest results from the Dark Energy Spectroscopic Instrument (DESI) survey to measure the Hubble constant. Baryon acoustic oscillation (BAO) observations released by the DESI survey, allow us to determine H0 from the first principles. Our method is purely data-driven and relies on unanchored luminosity distances reconstructed from Type Ia supernovae (SN Ia) data and H(z) reconstruction from cosmic chronometers. Thus, it circumvents calibrations related to the value of the sound horizon size at the baryon drag epoch or intrinsic luminosity of SN Ia. We find at a 68% confidence level, which provides the Hubble constant at an accuracy of 1.3% with minimal assumptions. Our assessments of this fundamental cosmological quantity using the BAO data spanning the redshift range z = 0.51–2.33 agree very well with Planck's results and TRGB results within 1σ. This result is still in a 4.3σ tension with the results of the Supernova H0 for the Equation of State.","PeriodicalId":501814,"journal":{"name":"The Astrophysical Journal Letters","volume":"14 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Astrophysical Journal Letters","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3847/2041-8213/ada37f","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
In this Letter, we use the latest results from the Dark Energy Spectroscopic Instrument (DESI) survey to measure the Hubble constant. Baryon acoustic oscillation (BAO) observations released by the DESI survey, allow us to determine H0 from the first principles. Our method is purely data-driven and relies on unanchored luminosity distances reconstructed from Type Ia supernovae (SN Ia) data and H(z) reconstruction from cosmic chronometers. Thus, it circumvents calibrations related to the value of the sound horizon size at the baryon drag epoch or intrinsic luminosity of SN Ia. We find at a 68% confidence level, which provides the Hubble constant at an accuracy of 1.3% with minimal assumptions. Our assessments of this fundamental cosmological quantity using the BAO data spanning the redshift range z = 0.51–2.33 agree very well with Planck's results and TRGB results within 1σ. This result is still in a 4.3σ tension with the results of the Supernova H0 for the Equation of State.
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