138 citations · 808 across the 32 of their papers we have counts for
34 papers
Anomalous Electric Fields in Earth's Turbulent Magnetosheath: Insights From 3D Hybrid Simulations
Jeffersson A. Agudelo Rueda, Julia E. Stawarz, Luca Franci +3
In both collisional and collisionless plasmas the presence of a broad range of electromagnetic and plasma fluctuations provides anomalous electric fields that can be important for…
Sub-sonic compressible magnetohydrodynamic turbulence I. Alfvénic and fast-magnetosonic injection, amplitude dependence, and compressibility effects
Eleonora Puzzoni, Silvio Sergio Cerri, Dimitri Laveder +2
We investigate how sub-sonic compressible magnetohydrodynamic (MHD) turbulence properties that are relevant for cosmic-ray (CR) transport in the Galaxy are affected by the nature a…
Polarized 3D Synthetic Turbulence I: Magnetic Field Line Random Walk
Matthieu Bouchet, Yoann Génolini, Silvio S. Cerri +2
The behavior of magnetic field lines in a turbulent plasma is a key property of the medium, with important consequences for plasma dynamics and charged-particle transport. We study…
Particle acceleration at recollimation shocks in sub-relativistic jets. A model for jets in Seyfert Galaxies, Microquasars and Protostellar Systems
Enrico Peretti, Elena Amato, Silvio Sergio Cerri +3
Growing observational evidence suggests that subrelativistic (SR) astrophysical jets may accelerate particles at slowly evolving standing shocks. Recollimation shocks (RCS) are exp…
Characterization of local energy transfer in large-scale intermittent stratified turbulent flows via coarse graining
Raffaello Foldes, Raffaele Marino, Silvio Sergio Cerri +1
Recent studies based on simulations of the Boussinesq equations indicate that stratified turbulent flows can develop large-scale intermittency in the velocity and temperature field…
Evidence of dual energy transfer driven by magnetic reconnection at sub-ion scales
Raffaello Foldes, Silvio Sergio Cerri, Raffaele Marino +1
The properties of energy transfer in the kinetic range of plasma turbulence have fundamental implications on the turbulent heating of space and astrophysical plasmas. It was recent…
Scale-Dependent Dynamic Alignment in MHD Turbulence: Insights into Intermittency, Compressibility, and Imbalance Effects
Nikos Sioulas, Marco Velli, Alfred Mallet +7
Scale-Dependent Dynamic Alignment (SDDA) in Elsässer field fluctuations is theorized to suppress nonlinearities and modulate the energy spectrum. Limited empirical evidence exists…
Electron-only reconnection and ion heating in 3D3V hybrid-Vlasov plasma turbulence
C. Granier, S. S. Cerri, F. Jenko
We perform 3D3V hybrid-Vlasov simulations of turbulence with quasi-isotropic, compressible injection near ion scales to mimic the Earth's magnetosheath plasma, and investigate the…
Higher-Order Analysis of Three-Dimensional Anisotropy in Imbalanced Alfvénic Turbulence
Nikos Sioulas, Themistocles Zikopoulos, Chen Shi +10
We analyze in-situ observations of imbalanced solar wind turbulence to evaluate MHD turbulence models grounded in "Critical Balance" (CB) and "Scale-Dependent Dynamic Alignment" (S…
Revisiting the role of cosmic-ray driven Alfvén waves in pre-existing magnetohydrodynamic turbulence. I. Turbulent damping rates and feedback on background fluctuations
Silvio Sergio Cerri
Alfvén waves (AWs) excited by the cosmic-ray (CR) streaming instability (CRSI) are a fundamental ingredient for CR confinement. The effectiveness of self-confinement relies on a ba…
Gyrofluid simulations of turbulence and reconnection in space plasmas
T. Passot, S. S. Cerri, C. Granier +3
A Hamiltonian two-field gyrofluid model is used to investigate the dynamics of an electron-ion collisionless plasma subject to a strong ambient magnetic field, within a spectral ra…
Turbulent regimes in collisions of 3D Alfvén-wave packets
Silvio Sergio Cerri, Thierry Passot, Dimitri Laveder +2
Using 3D gyrofluid simulations, we revisit the problem of Alfven-wave (AW) collisions as building blocks of the Alfvenic cascade and their interplay with magnetic reconnection at m…
EuCAPT White Paper: Opportunities and Challenges for Theoretical Astroparticle Physics in the Next Decade
R. Alves Batista, M. A. Amin, G. Barenboim +134
Astroparticle physics is undergoing a profound transformation, due to a series of extraordinary new results, such as the discovery of high-energy cosmic neutrinos with IceCube, the…
Characterizing current structures in 3D hybrid-kinetic simulations of plasma turbulence
Manuela Sisti, Sid Fadanelli, Silvio Sergio Cerri +3
In space and astrophysical plasmas turbulence leads to the development of coherent structures characterized by a strong current density and important magnetic shears. Using hybrid-…
Connecting Large-Scale Velocity and Temperature Bursts with Small-Scale Intermittency in Stratified Turbulence
Fabio Feraco, Raffaele Marino, Leonardo Primavera +13
Non-Gaussian statistics of large-scale fields are routinely observed in data from atmospheric and oceanic campaigns and global models. Recent direct numerical simulations (DNSs) sh…
On stochastic heating and its phase-space signatures in low- kinetic turbulence
Silvio Sergio Cerri, Lev Arzamasskiy, Matthew W. Kunz
We revisit the theory of stochastic heating of ions and investigate its phase-space signatures in kinetic turbulence of relevance to low- portions of the solar wind. We retain a…
Bridging hybrid- and full-kinetic models with Landau-fluid electrons: I. 2D magnetic reconnection
Francesco Finelli, Silvio S. Cerri, Francesco Califano +4
Magnetic reconnection (MR) plays a fundamental role in plasma dynamics under many different conditions, from space and astrophysical environments to laboratory devices. High-resolu…
The theory of cosmic-ray scattering on pre-existing MHD modes meets data
Ottavio Fornieri, Daniele Gaggero, Silvio Sergio Cerri +2
We present a comprehensive study about the phenomenological implications of the theory describing Galactic cosmic-ray scattering onto magnetosonic and Alfvénic fluctuations in the…
Space-filter techniques for quasi-neutral hybrid-kinetic models
S. S. Cerri, E. Camporeale
The space-filter approach has proved a fundamental tool in studying turbulence in neutral fluids, providing the ability to analyze scale-to-scale energy transfer in configuration s…
Interplay between Kelvin-Helmholtz and Lower-Hybrid Drift instabilities
Jérémy Dargent, Federico Lavorenti, Francesco Califano +3
Boundary layers in space and astrophysical plasmas are the location of complex dynamics where different mechanisms coexist and compete eventually leading to plasma mixing. In this…
Kinetic plasma turbulence: recent insights and open questions from 3D3V simulations
S. S. Cerri, D. Grošelj, L. Franci
Turbulence and kinetic processes in magnetized space plasmas have been extensively investigated over the past decades via \emph{in-situ} spacecraft measurements, theoretical models…
[Plasma 2020 Decadal] Disentangling the Spatiotemporal Structure of Turbulence Using Multi-Spacecraft Data
J. M. TenBarge, O. Alexandrova, S. Boldyrev +26
This white paper submitted for 2020 Decadal Assessment of Plasma Science concerns the importance of multi-spacecraft missions to address fundamental questions concerning plasma tur…
Electron-only magnetic reconnection in plasma turbulence
F. Califano, S. S. Cerri, M. Faganello +3
Hybrid-Vlasov-Maxwell simulations of magnetized plasma turbulence including non-linear electron-inertia effects in a generalized Ohm's law are presented. When fluctuation energy is…
Finite-Larmor-radius equilibrium and currents of the Earth's flank magnetopause
S. S. Cerri
We consider the one-dimensional equilibrium problem of a shear-flow boundary layer within an "extended Hall-MHD" (eHMHD) model of plasma that retains first-order finite Larmor radi…