@Article{BengalyGonzAlca:2020:ThEvHo,
               author = "Bengaly, Carlos A. P. and Gonzalez, Javier E. and Alcaniz, 
                         Janilson Souza de",
          affiliation = "{Observat{\'o}rio Nacional (ON)} and {Universidade Federal do Rio 
                         Grande do Norte (UFRN)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Is there evidence for a hotter Universe?",
              journal = "European Physical Journal C",
                 year = "2020",
               volume = "80",
               number = "10",
                pages = "e936",
                month = "Oct.",
             abstract = "The measurement of present-day temperature of the Cosmic Microwave 
                         Background (CMB), T0 = 2.72548± 0.00057 K (1\σ), made by the 
                         Far-InfraRed Absolute Spectrophotometer (FIRAS) as recalibrated by 
                         the Wilkinson Microwave Anisotropy Probe (WMAP), is one of the 
                         most precise measurements ever made in Cosmology. On the other 
                         hand, estimates of the Hubble Constant, H0, obtained from 
                         measurements of the CMB temperature fluctuations assuming the 
                         standard \ΛCDM model exhibit a large (4.1\σ) tension 
                         when compared with low-redshift, model-independent observations. 
                         Recently, some authors argued that a slightly change in T0 could 
                         alleviate or solve the H0-tension problem. Here, we investigate 
                         evidence for a hotter or colder universe by performing an 
                         independent analysis from currently available temperature-redshift 
                         T (z) measurements. Our analysis (parametric and non-parametric) 
                         shows a good agreement with the FIRAS measurement and a 
                         discrepancy of \≥ 1.9\σ from the T0 values required 
                         to solve the H0 tension. This result reinforces the idea that a 
                         solution of the H0-tension problem in fact requires either a 
                         better understanding of the systematic errors on the H0 
                         measurements or new physics.",
                  doi = "10.1140/epjc/s10052-020-08522-6",
                  url = "http://dx.doi.org/10.1140/epjc/s10052-020-08522-6",
                 issn = "1434-6044",
             language = "en",
           targetfile = "Bengaly2020_Article_IsThereEvidenceForAHotterUnive.pdf",
        urlaccessdate = "27 abr. 2024"
}