期刊
ASTROPHYSICAL JOURNAL
卷 929, 期 2, 页码 -出版社
IOP Publishing Ltd
DOI: 10.3847/1538-4357/ac5902
关键词
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资金
- NASA
- Center for Research and Exploration in Space Sciences & Technology II (CRESST II)
- University of Maryland College Park [80GSFC21M0002]
- PICT [2018 1095]
- UBACyT [20020190200035BA]
- NASA Goddard Space Flight Center [80GSFC21M0002]
In this study, a statistical analysis is conducted on the variability of the incompressible energy cascade rate in the solar wind around Mars, using more than five years of Mars Atmosphere and Volatile EvolutioN (MAVEN) observations. The results show that the incompressible energy cascade rate decreases as the Martian heliocentric distance increases. Furthermore, it is suggested that proton cyclotron waves, associated with the extended Martian hydrogen exosphere, do not have a significant effect on the nonlinear cascade of energy at the magnetohydrodynamics (MHD) scales.
We present a statistical analysis on the variability of the incompressible energy cascade rate in the solar wind around Mars, making use of an exact relation for fully developed turbulence and more than five years of Mars Atmosphere and Volatile EvolutioN (MAVEN) observations. Using magnetic field and plasma data, we compute the energy cascade rate at the magnetohydrodynamics (MHD) scales in the pristine solar wind. From our statistical results, we conclude that the incompressible energy cascade rate decreases as the Martian heliocentric distance increases, for each of the three explored Martian years. Moreover, we suggest that the presence of proton cyclotron waves, associated with the extended Martian hydrogen exosphere, do not have a significant effect on the nonlinear cascade of energy at the MHD scales.
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