Formation of the G-ring arc

Araújo, Nilton Carlos Santos; Neto, E. Vieira; Foryta, D. W.

doi:10.1093/mnras/stw1055

Cited by 4 publications

(5 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unfortunately, the large degeneracy between the cosmological parameters in such a narrow range, as it was shown in the previous case for the CPL parametrization, makes z M of no real use in such case [36]. But we have found a different and a very interesting way for which z M can be usefully used to explore the nature of our Universe.…”

Section: Theoretical Basismentioning

confidence: 69%

Probing the constancy of the speed of light with future galaxy survey: The case of SKA and Euclid

2016

View full text Add to dashboard Cite

In [1] a new method to measure the speed of light through Baryon Acoustic Oscillations (BAO) was introduced. Here, we describe in much more detail the theoretical basis of that method, its implementation, and give some newly updated results about its application to forecast data. In particular, we will show that SKA will be able to detect a 1% variation (if any) in the speed of light at 3σ level. Smaller signals will be hardly detected by already-planned future galaxy surveys, but we give indications about what sensitivity requirements should a survey fulfill in order to be successful.

show abstract

Section: Theoretical Basismentioning

confidence: 69%

Probing the constancy of the speed of light with future galaxy survey: The case of SKA and Euclid

2016

View full text Add to dashboard Cite

show abstract

“…The investigation of the orbital stability of the small moons and their arc particles, coupled with the Mimas tidal migration, would allows us to better understand the recent dynamics of corotation resonances (e.g. Araujo et al 2016), as well as to point out possible origins for these resonant motions. We will also address these points in a future work.…”

Section: Discussionmentioning

confidence: 99%

“…Hedman et al 2009). However, the consideration of non-gravitational forces have shown that most particles are removed from the arcs in timescales of dozens of years, depending on the size of the grain (Sun et al 2017;Madeira et al 2018;Madeira & Giuliatti Winter 2020), indicating that the origin and sustainability of the arcs is still a puzzle (see also Araujo et al 2016).…”

Section: Satellitementioning

confidence: 99%

“…However, we are not establishing a direct relationship between the clumps obtained in our simulations with the observed arcs. Indeed, previous works have investigated the formation and sustainability of arcs structures around Aegaeon, Methone and Anthe considering gravitational and non-gravitational perturbations (Araujo et al 2016;Sun et al 2017;Madeira et al 2018). In Sec.…”

Section: Clumpsmentioning

confidence: 99%

“…As we mentioned in Sec. 3.6, previous works have investigated the formation and sustainability of arcs structures around Aegaeon, Methone and Anthe considering gravitational and non-gravitational perturbations (Araujo et al 2016;Sun et al 2017;Madeira et al 2018). Note that Madeira & Giuliatti Winter (2020) claim that, due to instabilities of the dust particles, the arcs tend to be transient structures.…”

Section: Arcsmentioning

confidence: 99%

See 2 more Smart Citations

Dynamical stability in the vicinity of Saturnian small moons. The cases of Aegaeon, Methone, Anthe and Pallene

Rodríguez,

Callegari

2021

Preprint

View full text Add to dashboard Cite

In this work we analyze the orbital evolution and the dynamical stability in the vicinity of the small saturnian moons Aegaeon, Methone, Anthe and Pallene. We numerically resolve the exact equations of motions to investigate the orbital motion of thousands of test particles within and near to the domain of the 7/6, 14/15, 10/11 mean motion resonances of Aegaeon, Methone and Anthe with Mimas, respectively. We show that, for massless small moons, the orbits of particles initially restricted to the resonant domains remain stable for at least 10 4 yr. We also conduct numerical simulations considering Aegaeon, Methone, Anthe and Pallene as massive bodies. The results show that most particles undergo significant perturbations in their orbital motions, ultimately destabilizing in timescales of a few hundreds of years or even less through collisions with the four small moons. In addition, we also simulate the orbital evolution of test particles initially distributed in form of arc around Aegaeon, Methone and Anthe. We show that the initial arcs are dynamically eroded on timescales of hundreds of years, allowing us to constraint the timescales for which gravitational forces operate to remove particles from the observed arcs.

show abstract

Dynamical stability in the vicinity of Saturnian small moons: the cases of Aegaeon, Methone, Anthe, and Pallene

Rodríguez

Callegari

2021

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

In this work we analyse the orbital evolution and dynamical stability in the vicinity of the small Saturnian moons Aegaeon, Methone, Anthe, and Pallene. We numerically resolve the exact equations of motions to investigate the orbital motion of thousands of test particles within and near the domain of the 7/6, 14/15, 10/11 mean-motion resonances of Aegaeon, Methone, and Anthe with Mimas, respectively. We show that, for massless small moons, the orbits of particles initially restricted to the resonant domains remain stable for at least 104 yr. We also conduct numerical simulations considering Aegaeon, Methone, Anthe, and Pallene as massive bodies. The results show that most particles undergo significant perturbations in their orbital motions, ultimately destabilizing on time-scales of a few hundreds of years or even less through collisions with the four small moons. In addition, we also simulate the orbital evolution of test particles initially distributed in the form of arcs around Aegaeon, Methone, and Anthe. We show that the initial arcs are dynamically eroded on time-scales of hundreds of years, allowing us to constrain the time-scales on which gravitational forces operate to remove particles from the observed arcs.

show abstract

Formation of the G-ring arc

Cited by 4 publications

References 19 publications

Probing the constancy of the speed of light with future galaxy survey: The case of SKA and Euclid

Probing the constancy of the speed of light with future galaxy survey: The case of SKA and Euclid

Dynamical stability in the vicinity of Saturnian small moons. The cases of Aegaeon, Methone, Anthe and Pallene

Dynamical stability in the vicinity of Saturnian small moons: the cases of Aegaeon, Methone, Anthe, and Pallene

Contact Info

Product

Resources

About