Investigation of similar to 20-40mHz ULF waves and their driving mechanisms in Mercury's dayside magnetosphere

• Ultra-low-frequency (ULF) waves in the similar to 20-40 mHz range are frequently observed in the Mercury magnetosphere using Mercury Surface Space Environment Geochemistry, and Ranging (MESSENGER) magnetic field data. The majority of these waves have very similar characteristics to the waves likely driven by Kelvin-Helmholtz (KH) ULF waves (which are retained as a subset of the wave events studied in this paper) identified in a previous study. Significant ULF wave activity is observed in the dawn sector of the magnetosphere. This indicates that Mercury KH waves may be more common between 6 and 12 magnetic local time than previously predicted and that magnetospheric ULF waves in the frequency band similar to 20-40 mHz can be used as a detection tool for Hermean KH waves.

Ämnesord

NATURVETENSKAP  -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)

Nyckelord

Magnetospheric physics

magnetopause cusp and boundary layers

magnetospheric configuration and dynamics solar wind

magnetosphere interactions

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