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| INSTITUTET FÖR RYMDFYSIK | UPPSALA |
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| Swedish Institute of Space Physics | (59°50.272′N, 17°38.786′E) |
Student Project (10 c)/Studentprojekt (10 hp)
Wave power of electrostatic waves in Earth’s magnetosheath
Student: Jonathan Remmert, Uppsala UniversitySupervisor: Daniel Graham
Abstract
In this project, we focus on investigating the occurrence and origin of high frequency electrostatic waves observed in Earth’s magnetosheath. The magnetosheath is known to be a region of high turbulence with a lot of wave activity. So far, there are not many statistical studies of electrostatic waves in the magnetosheath. Therefore, we investigate over 71 hours worth of electric field data, derive the total wave power, and compare it to other parameters like local magnetic field perturbations and solar wind data. We find indications of significant electromagnetic and electrostatic contributions in the perpendicular component of the electric field while the parallel component shows no sign of electromagnetic influence. The parallel component also shows a clear trend of lower wave power with growing distance from the bow shock. We therefore conclude that the bow shock seems to be the main driver of high frequency electrostatic waves in the magnetosheath.Results
Final report
![[MMS]](plot.png)
Overview of the amplitude of the electric field component along the magnetic field for wave events identified in the terrestrial magnetosheath. The Earth is at the origin, the Sun far to the left, and average positions of the bow shock (green) and magnetopause (blue) are indicated.