Journal article
Solar Wind Turbulence Around Mars: Relation between the Energy Cascade Rate and the Proton Cyclotron Waves Activity
The Astrophysical journal, Vol.902(2), p.134
10/21/2020
DOI: 10.3847/1538-4357/abb5a7
Abstract
The first estimation of the incompressible energy cascade rate at magnetohydrodynamic (MHD) scales in the plasma upstream of the Martian bow shock is obtained, making use of magnetic field and plasma observations provided by Mars Atmosphere and Volatile EvolutioN (MAVEN) over 600 orbits. In particular, the energy cascade rate is computed for events with and without proton cyclotron wave (PCW) activity, for time intervals when MAVEN was in the solar wind with no magnetic connection to the bow shock. It is shown that the nonlinear cascade of energy at the MHD scales is slightly amplified when PCWs are present in the plasma, around the Martian perihelion. In addition, the analysis of the normalized cross helicity and residual energy for the turbulent fluctuations shows the presence of Alfvenic and non-Alfvenic fluctuations in a magnetic dominant regime for the majority of the cases.
Details
- Title: Subtitle
- Solar Wind Turbulence Around Mars: Relation between the Energy Cascade Rate and the Proton Cyclotron Waves Activity
- Creators
- Nahuel Andres - Institute of Astronomy and Space PhysicsNorberto Romanelli - Goddard Space Flight CenterLina Z. Hadid - Institut Polytechnique de ParisFouad Sahraoui - Institut Polytechnique de ParisGina DiBraccio - Goddard Space Flight CenterJasper Halekas - University of Iowa
- Resource Type
- Journal article
- Publication Details
- The Astrophysical journal, Vol.902(2), p.134
- Publisher
- Iop Publishing Ltd
- DOI
- 10.3847/1538-4357/abb5a7
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Number of pages
- 9
- Grant note
- NASA through the Mars Scout program CNRS/CONICET Laboratoire International Associe (LIA) MAGNETO PICT 2018 1095 / Agencia de Promocion Cientifica y Tecnologica (Argentina); ANPCyT MAVEN Project Scientist Support
- Language
- English
- Date published
- 10/21/2020
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984429029402771
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