The role of the general relativity on icy body reservoirs under the effects of an inner eccentric Jupiter

ZANARDI, M.; G. C. DE ELÍA; DI SISTO R.P.; NAOZ, SMADAR

ASTRONOMY AND ASTROPHYSICS

EDP SCIENCES S A

Lugar: Paris; Año: 2018 vol. 615 p. 1 - 11

0004-6361

Context. Recent studies have analyzed the dynamical evolution of outer small body populations under the eects of an eccentric inner massive perturber, which result from a planetary scattering event. These investigations suggest that such outer reservoirs are composed of particles on prograde and retrograde orbits, as well as particles whose orbit flips from prograde to retrograde and back again showing a coupling between the inclination i and the ascending node longitude (Type-F particles) Aims. We analyze the role of the General Relativity (GR) on the dynamics of outer particles under the influence of an inner eccentricJupiter-mass planet produced by a planetary scattering event. In particular, we are interested to study how the GR aects the dynamicalevolution of the outer Type-F particles, which experience an eccentric Lidov-Kozai mechanism. Methods. To do this, we carry out N-body simulations with and without GR eects. Such a detailed comparative analysis will allow us to strengthen our understanding concerning the GR and eccentric Lidov-Kozai combined eects on the dynamical evolution ofouter particles. Results. When the GR is included, the extreme values of are obtained for retrograde inclinations, while the minimum and maximuminclinations allowed for Type-F particles increase in comparison with that derived without GR eects. According to this, if the GR isincluded in the simulations, the range of prograde (retrograde) inclinations of the libration region is reduced (increased) respect to that obtained in absence of GR. We find two new class of particles when the GR eects are included in the simulations. On the one hand,particles whose orbital plane flips from prograde to retrograde and back again without experiencing a coupling between i and. Onthe other hand, retrograde particles that show a strong coupling between i and. We infer that the GR may significantly modify the dynamical properties of the outer reservoirs that evolve under the effects of an eccentric inner perturber.