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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effects of immersed moonlets in the ring arc particles of Saturn

Full text
Author(s):
Madeira, G. [1] ; Giuliatti Winter, S. M. [1]
Total Authors: 2
Affiliation:
[1] Univ State Sao Paulo UNESP, Grp Dinam Orbital & Planetol, Guaratingueta - Brazil
Total Affiliations: 1
Document type: Journal article
Source: European Physical Journal-Special Topics; v. 229, n. 8, SI, p. 1527-1543, MAY 2020.
Web of Science Citations: 1
Abstract

Ring arcs are the result of particles in corotation resonances with nearby satellites. Arcs are present in Saturn and Neptune systems, in Saturn they are also associated with small satellites immersed on them. The satellite Aegaeon is immersed in the G ring arc, and the satellites Anthe and Methone are embedded in arcs named after them. Since most of the population of the arcs is formed by mu m-sized particles the dissipative effects, such as the plasma drag and the solar radiation force, decrease the lifetime of the arcs. We analysed the effects of the immersed satellites on these arcs by computing the mass production rate and the perturbation caused by them in the arc particles. By comparing the lifetime of the particles and the mass production rate we concluded that Aegaeon, Anthe and Methone did not act as sources for their arcs. We took a step further by analysing a hypothetical scenario formed by an immersed moonlet of different sizes. As a result we found that regardless of the size of the hypothetical moonlet (from about 0.10 km-4.0 km) these moonlets will not act as a source. These arcs are temporary structures and they will disappear in a very short period of time. (AU)

FAPESP's process: 16/24561-0 - On the relevance of small bodies in orbital dynamics
Grantee:Othon Cabo Winter
Support type: Research Projects - Thematic Grants
FAPESP's process: 16/24488-0 - Orbital evolution study of particles in Lindblad and corotation resonances and under influence of coorbitals sattelites: planetary arcs application
Grantee:Gustavo Oliveira Madeira
Support type: Scholarships in Brazil - Master
FAPESP's process: 18/23568-6 - Scenarios for the formation of Neptune's arcs and the giant satellites of the Solar System
Grantee:Gustavo Oliveira Madeira
Support type: Scholarships in Brazil - Doctorate