7–11 Jul 2025
Teaching and Learning Centre (TLC)
Europe/London timezone

Energetic Electron Observations During BepiColombo’s Mercury Flybys

10 Jul 2025, 16:20
14m
Teaching and Learning Centre (TLC)

Teaching and Learning Centre (TLC)

Durham University South Road Durham DH1 3LS
Talk Planetary science and exploration Planetary science and exploration

Speaker

Dr Liam Edwards (University of Helsinki)

Description

Mercury hosts a dynamic and highly variable magnetosphere shaped by its weak intrinsic magnetic field and the intense pressure of the solar wind. Previous observations from spacecraft sent to the planet have provided key insights into Mercury’s magnetospheric structure and energetic particle populations, revealing transient and highly variable energetic electron enhancements within the planet’s magnetosphere. We present BepiColombo/SIXS observations of energetic electron populations in Mercury’s magnetosphere during the spacecraft’s flybys of the planet. Although no such populations were observed during the first flyby, strong energetic electron signatures were observed during the second and third flyby. These observations are further discussed in the context of observations by MESSENGER (Lawrence et al., 2015) in the invariant latitude-MLT plane, showing good agreement between the two data sets.

Primary author

Dr Liam Edwards (University of Helsinki)

Co-authors

Arto Lehtolainen (University of Helsinki) David Lawrence (Johns Hopkins University Applied Physics Laboratory) Eero Esko (University of Helsinki) Emilia Kilpua (University of Helsinki) Manuel Grande (Aberystwyth University) Rami Vainio (University of Turku)

Presentation materials

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