235 citations · 2.3k across the 40 of their papers we have counts for
41 papers
An Intermittent Model for the Spectrum in the Pristine Solar Wind
Maia Brodiano, Fouad Sahraoui, Davide Manzini +4
We present a statistical, observational study of the range of solar wind turbulence, where denotes frequency, using in situ data from the Parker Solar Probe (PSP). We com…
Impact of pressure anisotropy on the cascade rate of Hall-MHD turbulence with biadiabatic ions
Pauline A. Simon, Fouad Sahraoui, Sébastien Galtier +3
The impact of ion pressure anisotropy on the energy cascade rate of Hall-MHD turbulence with biadiabatic ions and isothermal electrons is evaluated in three-dimensional direct nume…
On the Cascade-Dissipation Balance in Astrophysical Plasmas
Davide Manzini, Fouad Sahraoui, Francesco Califano
The differential heating of electrons and ions by turbulence in weakly collisional magnetized plasmas and the scales at which such energy dissipation is most effective are still de…
Compressible turbulence in the interstellar medium: New insights from a high-resolution supersonic turbulence simulation
Renaud Ferrand, Sébastien Galtier, Fouad Sahraoui +1
The role of supersonic turbulence in structuring the interstellar medium (ISM) remains an unsettled question. Here, this problem is investigated using a newexact law of compressibl…
Subion Scale Turbulence Driven by Magnetic Reconnection
Davide Manzini, Fouad Sahraoui, Francesco Califano
The interplay between plasma turbulence and magnetic reconnection remains an unsettled question in astrophysical and laboratory plasmas. Here we report the first observational evid…
Anisotropy of Magnetic Field Spectra at Kinetic Scales of Solar Wind Turbulence as Revealed by Parker Solar Probe in the Inner Heliosphere
S. Y. Huang, S. B. Xu, J. Zhang +11
Using the Parker Solar Probe data taken in the inner heliosphere, we investigate the power and spatial anisotropy of magnetic-field spectra at kinetic scales (i.e., around sub-ion…
Local cascade and dissipation in incompressible Hall magnetohydrodynamic turbulence: the Coarse-Graining approach
Davide Manzini, Fouad Sahraoui, Francesco Califano +1
We derive the coarse-graining (CG) equations of incompressible Hall Magnetohydrodynamics (HMHD) turbulence to investigate the {\it local (in space)} energy cascade rate as a functi…
Investigating Mercury's Environment with the Two-Spacecraft BepiColombo Mission
A. Milillo, M. Fujimoto, G. Murakami +76
The ESA-JAXA BepiColombo mission will provide simultaneous measurements from two spacecraft, offering an unprecedented opportunity to investigate magnetospheric and exospheric dyna…
An in-depth numerical study of exact laws for compressible Hall magnetohydrodynamic turbulence
R. Ferrand, F. Sahraoui, S. Galtier +3
Various exact laws governing compressible magnetohydrodynamic (MHD) and Hall-MHD (CHMHD) turbulence have been derived in recent years. Other than their fundamental theoretical inte…
Energy transfer, discontinuities and heating in the inner solar wind measured with a weak and local formulation of the Politano-Pouquet law
Vincent David, Sébastien Galtier, Fouad Sahraoui +1
The solar wind is a highly turbulent plasma for which the mean rate of energy transfer has been measured for a long time using the Politano-Pouquet (PP98) exact law.…
The incompressible energy cascade rate in anisotropic solar wind turbulence
N. Andrés, F. Sahraoui, Huang +2
Context. The presence of a magnetic guide field induces several types of anisotropy in solar wind turbulence. The energy cascade rate between scales in the inertial range depends s…
Exact law for compressible pressure-anisotropic magnetohydrodynamic turbulence: toward linking energy cascade and instabilities
P. Simon, F. Sahraoui
We derive a first exact law for compressible pressure-anisotropic magnetohydrodynamic turbulence. For a gyrotropic pressure tensor, we study the double-adiabatic case and show the…
Fluid energy cascade rate and kinetic damping: new insight from 3D Landau-fluid simulations
R. Ferrand, F. Sahraoui, D. Laveder +3
Using an exact law for incompressible Hall magnetohydrodynamics (HMHD) turbulence, the energy cascade rate is computed from three-dimensional HMHD-CGL (bi-adiabatic ions and isothe…
Power Anisotropy, Dispersion Signature and Turbulence Diffusion Region in the 3D Wavenumber Domain of Space Plasma Turbulence
Rong Lin, Jiansen He, Xingyu Zhu +4
We explore the multi-faceted important features of turbulence (e.g., anisotropy, dispersion, diffusion) in the three-dimensional (3D) wavenumber domain (, $k_{\perp,1}…
General exact law of compressible isentropic magnetohydrodynamic flows: theory and spacecraft observations in the solar wind
Pauline Simon, Fouad Sahraoui
Various forms of exact laws governing magnetohydrodynamic (MHD) turbulence have been derived either in the incompressibility limit, or for isothermal compressible flows. Here we pr…
The evolution of compressible solar wind turbulence in the inner heliosphere: PSP, THEMIS and MAVEN observations
N. Andrés, F. Sahraoui, L. Z. Hadid +5
The first computation of the compressible energy transfer rate from 0.2 AU up to 1.7 AU is obtained using PSP, THEMIS and MAVEN observations. The compressible energy…
The Ion Transition Range of Solar Wind Turbulence in the Inner Heliosphere: Parker Solar Probe Observations
S. Y. Huang, F. Sahraoui, N. Andrés +15
The scaling of the turbulent spectra provides a key measurement that allows to discriminate between different theoretical predictions of turbulence. In the solar wind, this has dri…
The Solar Orbiter Science Activity Plan: translating solar and heliospheric physics questions into action
I. Zouganelis, A. De Groof, A. P. Walsh +182
Solar Orbiter is the first space mission observing the solar plasma both in situ and remotely, from a close distance, in and out of the ecliptic. The ultimate goal is to understand…
Solar Wind Turbulence Around Mars: Relation Between The Energy Cascade Rate And The Proton Cyclotron Waves Activity
Nahuel Andrés, Norberto Romanelli, Lina Z. Hadid +3
The first estimation of the incompressible energy cascade rate at magnetohydrodynamic (MHD) scales is obtained in the plasma upstream of the Martian bow shock, using MAVEN observat…
Kinetic Scale Slow Solar Wind Turbulence in the Inner Heliosphere: Co-existence of Kinetic Alfvén Waves and Alfvén Ion Cyclotron Waves
S. Y. Huang, J. Zhang, F. Sahraoui +12
The nature of the plasma wave modes around the ion kinetic scales in highly Alfvénic slow solar wind turbulence is investigated using data from the NASA's Parker Solar Probe taken…
Resonant whistler-electron interactions: MMS observations vs. test-particle simulation
Etienne Behar, Fouad Sahraoui, Laura Bercic
Simultaneous observation of characteristic 3-dimensional (3D) signatures in the electron velocity distribution function (VDF) and intense quasi-monochromatic waves by the Magnetosp…
Energy cascade rate measured in a collisionless space plasma with MMS data and compressible Hall magnetohydrodynamic turbulence theory
Nahuel Andrés, Fouad Sahraoui, Sebastien Galtier +3
The first complete estimation of the compressible energy cascade rate at magnetohydrodynamic (MHD) and sub-ion scales is obtained in the Earth's magnetoshe…
A Case for Electron-Astrophysics
Daniel Verscharen, Robert T. Wicks, Olga Alexandrova +27
A grand-challenge problem at the forefront of physics is to understand how energy is transported and transformed in plasmas. This fundamental research priority encapsulates the con…
On exact laws in incompressible Hall magnetohydrodynamic turbulence
Renaud Ferrand, Sébastien Galtier, Fouad Sahraoui +3
A comparison is made between several existing exact laws in incompressible Hall magnetohydrodynamic (IHMHD) turbulence in order to show their equivalence, despite stemming from dif…