Preprint Hypothesis Version 2 Preserved in Portico This version is not peer-reviewed

An Alternative Explanation of the Orbital Expansion of Titan and Other Bodies in the Solar System

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)

How to cite: Křížek, M.; Gueorguiev, V.G.; Maeder, A. An Alternative Explanation of the Orbital Expansion of Titan and Other Bodies in the Solar System. Preprints 2021, 2021090200 (doi: 10.20944/preprints202109.0200.v2). Křížek, M.; Gueorguiev, V.G.; Maeder, A. An Alternative Explanation of the Orbital Expansion of Titan and Other Bodies in the Solar System. Preprints 2021, 2021090200 (doi: 10.20944/preprints202109.0200.v2).

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 & Astrophysics

Comments (1)

Comment 1
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 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.
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