An alternative explanation of the orbital Expansion of Titan and other bodies in the Solar system

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985840%3A_____%2F22%3A00558114" target="_blank" >RIV/67985840:_____/22:00558114 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1134/S0202289322020086" target="_blank" >https://doi.org/10.1134/S0202289322020086</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1134/S0202289322020086" target="_blank" >10.1134/S0202289322020086</a>

Result language
angličtina
Original language name
An alternative explanation of the orbital Expansion of Titan and other bodies in the Solar system
Original language description
Recently it was found from the 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–Lemaître constant H0, recalculated to the Saturn–Titan distance D, is 8.15 cm/(yr D). 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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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