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The Source of Tension in the Measurements of the Hubble Constant

DOI: 10.4236/ijaa.2022.123016, PP. 273-280

Keywords: Cosmology, Hubble Constant, Cosmology: Observations

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Abstract:

Through an analytical approach, we show that the Hubble constant is not unique and has two distinct values. The first of these values is consistent with the measurements by Riess et al., while the second value is consistent with the measurements by the Planck Collaboration. This is a new alternative approach that does not depend on the standard ΛCDM model and its constraints. Our analysis shows that the tension is due to a geometric mismatch in the comparison of the measurements which is equal to the temporal diameter of the surface of last scattering. Since the calculated values are essentially identical to the corresponding measured values, we conclude that the non-congruency of the ending point of the Riess et al. measurement and the starting point of the Planck Collaboration measurement, on the surface of last scattering, is the source of tension in the measurements. Further, the surprising consistency of the calculated values of the Hubble constant with the corresponding measured values confirms both the extreme fidelity of the measurements and the validity of the proposed approach.

References

[1]  Hubble, E. (1929) A Relation between Distance and Radial Velocity among Extra-Galactic Nebulae. Proceedings of the National Academy of Sciences of the United States of America, 15, 168-173.
https://doi.org/10.1073/pnas.15.3.168
[2]  Perlmutter, S. (2012) Nobel Lecture: Measuring the Acceleration of the Cosmic Expansion Using Supernovae. Review of Modern Physics, 84, 1127-1149.
https://doi.org/10.1103/RevModPhys.84.1127
[3]  Riess, A.G. (2012) Nobel Lecture: My Path to the Accelerating Universe. Reviews of Modern Physics, 84, 1165-1175.
https://doi.org/10.1103/RevModPhys.84.1165
[4]  Schmidt, B.P. (2012) Nobel Lecture: Accelerating Expansion of the Universe through Observation of Distant Supernovae. Reviews of Modern Physics, 84, 1151-1163.
https://doi.org/10.1103/RevModPhys.84.1151
[5]  Riess, A.G., Casertano, S., Yuan, W., et al. (2021) Cosmic Distances Calibrated to 1% Precision with GAIA EDR3 Parallaxes and Hubble Space Telescope Photometry of 75 Milky Way Cepheids Confirm Tension with ΛCDM. The Astrophysical Journal Letters, 908, L6.
https://doi.org/10.3847/2041-8213/abdbaf
[6]  Riess, A.G., Casertano, S., Yuan, W., et al. (2018) Milky Way Cepheid Standards for Measuring Cosmic Distances and Application to Gaia DR2: Implications for the Hubble Constant. The Astrophysical Journal, 861, Article No. 126.
https://doi.org/10.3847/1538-4357/aac82e
[7]  Riess, A.G., Casertano, S., Yuan, W., et al. (2018) New Parallaxes of Galactic Cepheids from Spatially Scanning the Hubble Space Telescope: Implications for the Hubble Constant. The Astrophysical Journal, 861, Article No. 136.
https://doi.org/10.3847/1538-4357/aaadb7
[8]  Riess, A.G., Macri, L.M., Hoffmann, S.L., et al. (2016) A 2.4% Determination of the Local Value of the Hubble Constant. The Astrophysical Journal, 826, Article No. 56.
https://doi.org/10.3847/0004-637X/826/1/56
[9]  Reid, M.J., Pesce, D.W. and Riess, A.G. (2019) An Improved Distance to NGC 4258 and Its Implications for the Hubble Constant. The Astrophysical Journal Letters, 886, L27.
https://doi.org/10.3847/2041-8213/ab552d
[10]  Aghanim, N., Akrami, Y., Ashdown, M., et al. (2021) Planck 2018 Results. VI. Cosmological Parameters. Astronomy & Astrophysics.
https://arxiv.org/pdf/1807.06209.pdf
[11]  Ade, P.A.R., Aghanim, N., Armitage-Caplan, et al. (2014) Planck 2013 Results. XVI. Cosmological Parameters. Astronomy & Astrophysics, 571, A16.
[12]  Ade, P.A.R., Aghanim, N., Armitage-Caplan, et al. (2013) Planck 2013 Results. I. Overview of Products and Scientific Results. Astronomy & Astrophysics, 571, A1.
[13]  Sutter, P.M. (2021) Why Is There a Crisis in Cosmology?
https://www.space.com/why-is-there-a-cosmology-crisis
[14]  Greene, B. and Perlmutter, S. (2022) World Science Festival. YouTub.
https://www.youtube.com/watch?v=zokNLqGd9TQ
[15]  Freedman, L.F. (2017) Cosmology at Crossroads: Tension with the Hubble Constant. Nature Astronomy, 1, Article No. 0169.
https://doi.org/10.1038/s41550-017-0121
[16]  Goldin, E. (1982) Waves and Photons, an Introduction to Quantum Optics. John Wiley & Sons, New York.
[17]  Anderson, E.E. (1981) Modern Physics and Quantum Mechanics. Saunders, Philadelphia.
[18]  Simionato, S. (2021) Three Redshifts: Doppler, Cosmological, and Gravitational. The Physics Teacher, 59, 333-336.
https://doi.org/10.1119/10.0004881
[19]  Fixsen, D.J. (2009) The Temperature of the Cosmic Microwave Background. The Astrophysical Journal, 707, 916-920.
https://doi.org/10.1088/0004-637X/707/2/916

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