Effects of immersed moonlets in the ring arc particles of Saturn. (arXiv:2004.14972v1 [astro-ph.EP])
<a href="http://arxiv.org/find/astro-ph/1/au:+Madeira_G/0/1/0/all/0/1">Gustavo Madeira</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Winter_S/0/1/0/all/0/1">Silvia Maria Giuliatti Winter</a>

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 the
size of the hypothetical moonlet (from about 0.10 km to 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.

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 the
size of the hypothetical moonlet (from about 0.10 km to 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.

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