Ultra‐Low Frequency Waves in the Hermean Magnetosphere: On the Role of the Morphology of the Magnetic Field and the Foreshock

Abstract

Characterization of the properties of the Ultra-low frequency (ULF) waves in planetary magnetospheres provides a way to investigate magnetospheric dynamics and the properties of the magnetosphere, such as the density of magnetospheric plasma. The dynamics of Mercury's magnetosphere are anticipated to have unique properties as it has an intrinsic magnetic field that is weak compared to that of the Earth, but strong compared to the other terrestrial planets and the interplanetary magnetic field (IMF).A unique magnetic feature at Mercury is that the relatively low conductivity of the crust and mantle results in a rapid (timescale of minutes) transmission of magnetic field perturbations from the high-altitude solar wind interaction and magnetosphere down to the outermost layers of the iron core. These perturbations include large-scale compressions and rarefactions (

Deformations at Earth’s dayside magnetopause during quasi-radial IMF conditions: Global kinetic simulations and Soft X-ray Imaging

“…In this paper, the interaction of the solar wind with Earth's magnetosphere has been simulated by the three-dimensional (3-D) global hybrid simulation platform RHybrid (e.g., Jarvinen et al 2018Jarvinen et al , 2020Jarvinen et al , 2022Kallio et al 2022). The model setup includes the undisturbed, upstream solar wind ions injected in the simulation from the front ( ) wall along the direction with a drifting Maxwellian velocity distribution.…”