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14 papers · 1 filter
Radially anisotropic systems with forces. II: radial-orbit instability
Pierfrancesco Di Cintio, Luca Ciotti, Carlo Nipoti
We continue to investigate the dynamics of collisionless systems of particles interacting via additive interparticle forces. Here we focus on the dependence of the radial-…
Study and application of the resonant secular dynamics beyond Neptune
Melaine Saillenfest, Marc Fouchard, Giacomo Tommei +1
We use a secular representation to describe the long-term dynamics of transneptunian objects in mean-motion resonance with Neptune. The model applied is thoroughly described in Sai…
Long term dynamics beyond Neptune: secular models to study the regular motions
Melaine Saillenfest, Marc Fouchard, Giacomo Tommei +1
Two semi-analytical one-degree-of-freedom secular models are presented for the motion of small bodies beyond Neptune. A special attention is given to trajectories entirely exterior…
Topology of configuration space of the mean-field phi^4 model by Morse theory
Fabrizio Baroni
In this paper we present the study of the topology of the equipotential hypersurfaces of configuration space of the mean-field model with a symmetry. Our purpo…
Multi-particle collision simulations of 2D one-component plasmas: anomalous transport and dimensional crossovers
Pierfrancesco Di Cintio, Roberto Livi, Stefano Lepri +1
By means of hybrid multi-particle collsion--particle-in-cell (MPC-PIC) simulations we study the dynamical scaling of energy and density correlations at equilibrium in moderately co…
Laboratory measurements of super-resolving Toraldo pupils for radio astronomical applications
Luca Olmi, Pietro Bolli, Luca Cresci +7
The concept of super-resolution refers to various methods for improving the angular resolution of an optical imaging system beyond the classical diffraction limit. Although several…