Volume 8, Issue 4, December 2020, Page: 80-86
The Cause of Tension in the Measurements of the Hubble Constant
Naser Mostaghel, Department of Civil Engineering, University of Toledo, Toledo, USA
Received: Oct. 16, 2020;       Accepted: Nov. 6, 2020;       Published: Dec. 8, 2020
DOI: 10.11648/j.ajaa.20200804.13      View  78      Downloads  49
Abstract
The latest reported measurements for the evaluation of the Hubble constant by two different teams, the Riess et al. (2019) in USA and the Plank Collaboration (2018) in Europe, in spite of increased accuracy of measurements, have resulted in significantly different values. This tension between the results of the two different measurement methodologies has been a vexing puzzle. To resolve this tension we present a two-parameter kinematic model which predicts two different values for the Hubble constant. Each predicted value is essentially identical to one of the measured values. The two parameters are the redshift and the age of the universe. Using the model we show that the elapsed time between the event of the Big Bang and the event of the release of photons, at the decoupling time, is the factor causing the tension in the above two measurements of the Hubble constant. This model also yields a simple relation for predictions of distance moduli. It is shown that the predicted distance moduli are remarkably consistent both with the observational data and with those of the standard Lambda CDM model. As the predicted values of the Hubble constant are essentially identical to the corresponding measured values, it is concluded that the difference in the measured values of the Hubble constant is due to how the elapsed time, between the event of the big bang and the event of the appearance of photons, has incorporated itself into the measurement methodologies.
Keywords
Cosmic Expansion Rate, Hubble Constant, Redshift, Distance Modulus, Dark Energy
To cite this article
Naser Mostaghel, The Cause of Tension in the Measurements of the Hubble Constant, American Journal of Astronomy and Astrophysics. Vol. 8, No. 4, 2020, pp. 80-86. doi: 10.11648/j.ajaa.20200804.13
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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