تقرير
Variability of the Solar Wind Flow Asymmetry in the Martian Magnetosheath Observed by MAVEN
| العنوان: | Variability of the Solar Wind Flow Asymmetry in the Martian Magnetosheath Observed by MAVEN |
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| المؤلفون: | N Romanelli, G Dibraccio, J Halekas, E Dubinin, J Gruesbeck, J Espley, G Poh, Y Ma, J G Luhmann |
| المصدر: | Geophysical Research Letters. 47(22) |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Solar Physics |
| الوصف: | We perform the first statistical analysis of effects that different external conditions20have on a solar wind (SW) flow asymmetry observed in the Martian magnetosheath due to mass loading, making use of∼5 years of Mars Atmosphere and Volatile EvolutioN22(MAVEN) observations. We find the difference between the mean magnetosheath SW velocity component along the SW convective electric field direction in regions in the positive and negative hemispheres displays a strong linear correlation with the ratio between the upstream Interplanetary Magnetic Field (IMF) cross-flow component (By) and the SW proton density (nsw). The asymmetry is maximized (∼25 - 35 kms−1) for low nsw(∼1 cm−3) and large IMF By(∼2 nT). These results suggest the SW flow asymmetry variability is due to a force arising from the differential streaming between SW protons and oxygen ions, with boundary conditions partly defined by the pristine SW properties. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| تدمد: | 1944-8007 0094-8276 |
| DOI: | 10.1029/2020GL090793 |
| URL الوصول: | https://ntrs.nasa.gov/citations/20210010414 |
| ملاحظات: | 293945.04.02.01 |
| رقم الأكسشن: | edsnas.20210010414 |
| قاعدة البيانات: | NASA Technical Reports |
Full Text Finder | تدمد: | 19448007 00948276 |
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| DOI: | 10.1029/2020GL090793 |