Version 1
: Received: 11 September 2021 / Approved: 13 September 2021 / Online: 13 September 2021 (10:53:54 CEST)
Version 2
: Received: 12 January 2022 / Approved: 13 January 2022 / Online: 13 January 2022 (12:58:55 CET)
Křížek, M., Gueorguiev, V.G. & Maeder, A. An Alternative Explanation of the Orbital Expansion of Titan and Other Bodies in the Solar System. Gravit. Cosmol. 28, 122–132 (2022). https://doi.org/10.1134/S0202289322020086
Křížek, M., Gueorguiev, V.G. & Maeder, A. An Alternative Explanation of the Orbital Expansion of Titan and Other Bodies in the Solar System. Gravit. Cosmol. 28, 122–132 (2022). https://doi.org/10.1134/S0202289322020086
Křížek, M., Gueorguiev, V.G. & Maeder, A. An Alternative Explanation of the Orbital Expansion of Titan and Other Bodies in the Solar System. Gravit. Cosmol. 28, 122–132 (2022). https://doi.org/10.1134/S0202289322020086
Křížek, M., Gueorguiev, V.G. & Maeder, A. An Alternative Explanation of the Orbital Expansion of Titan and Other Bodies in the Solar System. Gravit. Cosmol. 28, 122–132 (2022). https://doi.org/10.1134/S0202289322020086
Abstract
Recently it was found from Cassini data that the mean recession speed of Titan from Saturn is v = 11.3 ± 2.0 cm/yr which corresponds to a tidal quality factor of Saturn Q ≈ 100 while the standard estimate yields Q ≥ 6 · 104. It was assumed that such a large speed v is due to a resonance locking mechanism of five inner mid-sized moons of Saturn. In this paper, we show that an essential part of v may come from a local Hubble expansion, where the Hubble-Lemaˆıtre constant H0 recalculated to the Saturn-Titan distance D is 8.15 cm/(yrD). Our hypothesis is based on many other observations showing a slight expansion of the Solar system and also of our Galaxy at a rate comparable with H0. We demonstrate that the large disproportion in estimating the Q factor can be just caused by the local expansion effect. [Accepted for publication in "Gravitation and Cosmology". The paper is to appear in Vol. 28, Issue 2 (2022) of the journal Gravitation and Cosmology.]
Keywords
local Hubble expansion; Solar system; Titan; laws of conservation of energy and angular momentum
Subject
Physical Sciences, Astronomy and Astrophysics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Received:
13 January 2022
Commenter:
Vesselin Gueorguiev
Commenter's Conflict of Interests:
Author
Comment: Accepted for publication in "Gravitation and Cosmology". The paper is to appear in Vol. 28, Issue 2 (2022) of the journalGravitation and Cosmology.
Changes to current version:
Title changed to: "An alternative explanation of the orbital expansion of Titan and other bodies in the Solar system";
Section 2 is split into subsections.
Removed Section 5 Discussion remarks and moved its parts into subsection 3.3 Non-conservation effects and into the Conclusions section.
Some references were updated and the volume numbers were put in boldface text.
Commenter: Vesselin Gueorguiev
Commenter's Conflict of Interests: Author
The paper is to appear in Vol. 28, Issue 2 (2022) of the journal Gravitation and Cosmology.
Changes to current version:
Title changed to: "An alternative explanation of the orbital expansion of Titan and other bodies in the Solar system";
Section 2 is split into subsections.
Removed Section 5 Discussion remarks and moved its parts into subsection 3.3 Non-conservation effects and into the Conclusions section.
Some references were updated and the volume numbers were put in boldface text.