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Variable Speed of Light with Time and General Relativity

Journal of High Energy Physics, Gravitation and Cosmology 2021年第2期7卷 742-760页

作者： giuseppe pipino Technical High School ITIS Malignani Udine Italy

In a previous article entitled: “Evidences for varying speed of light with time” [1], a series of observational evidence was presented in favor of the hypothesis that the speed of light varies with time according to the relationship dc/dt = -Hc, where H is the Hubble constant which is considered a universal constant. In this paper we propose to elaborate on the observational evidence supporting the hypothesis, and to probe the consequences of this relationship on General Relativity. Also we will provide a theoretical justification of the previous relationship and we will show how from it we can deduce galactic velocity curves. We can deduce the important empirical Tully-Fisher relation linking these curves to the baryonic mass of the galaxy and we can justify the apparent accelerated expansion of the universe without intervening elusive entities such as dark matter and dark energy.

关键词： Abnormal Acceleration Modified Newtonian Dynamic Tully-Fisher Relation Redshift Hubble’s Law Dark Matter Dilation of Light Curves of Supernovae Ia Acceleration of Expansion of Universe General Relativity

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Evidences for Varying Speed of Light with Time

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Journal of High Energy Physics, Gravitation and Cosmology 2019年第2期5卷 395-411页

作者： giuseppe pipino Technical High School ITIS Malignani Udine Italy

Aims: The paper explores the hypothesis that the speed of light c is decreasing over time at rate (dc/dt)=-H? c, H being the Hubble constant. This hypothesis differs from the so-called tired light, in which the velocity c is supposed to vary during the journey of photons in the empty space for some frictional mechanism. In the hypothesis of the author the speed c, during this journey, is assumed constant. In this way the problems of the tired hypothesis are overcome. Methods: The paper links the variation dc/dt with the Hubble constant and infers a value of dc/dt from the difference between the value of the variation of the Earth-Moon distance measured by the Lunar Laser Ranging Experiment and the tidal effect. Results: Under the hypothesis c time varying, we explain: 1) The cosmological redshift. 2) The anomalous acceleration ap ≈ -8 × 10-10 m?sec-2, measured for some spacecrafts. 3) The high redshift of supernovae Ia, which seems to evidence an acceleration of the expansion of the universe. 4) The peripheral motion of stars in galaxies around their rotational centre. 5) The dilation of the light curves observed for supernovae Ia.

关键词： Lunar Laser Ranging Experiment Dilation of Light Curves of Supernovae Ia Redshift Hubble’s Law Dark Matter Abnormal Acceleration Acceleration of Expansion of Universe

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