EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Solar Wind control of Auroral Kilometric Radiation as measured by the Wind Satellite

Alexandra R. Fogg1, Caitríona M. Jackman1, James E. Waters2, Xavier Bonnin3, Laurent Lamy3, Baptiste Cecconi3, and Karine Issautier3
Alexandra R. Fogg et al.
  • 1Astronomy and Astrophysics Section, Dublin Institute for Advanced Studies, Ireland
  • 2Space Environment Physics, University of Southampton, United Kingdom
  • 3LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, France

Auroral Kilometric Radiation (AKR) emanates from acceleration regions from which escaping particles also excite a number of phenomenon in the terrestrial ionosphere, notably aurorae. As such, AKR emission is a barometer for particle precipitation, indicating activity in the magnetosphere. Observations suggest that the emission is mostly limited to the nightside, relating to bursty tail reconnection events. In this study we investigate the relationship between upstream interplanetary magnetic field and solar wind conditions, and the onset and morphology of corresponding AKR emission. Additionally, we explore the delay time between the arrival of solar wind phenomena at the magnetopause, and the onset of related AKR emission and morphology changes. Connections between AKR and solar wind observations allude to solar wind driving of energetic particle precipitation at different local times. The WAVES instrument on the Wind satellite has provided measurements of radio and plasma phenomenon at a range of locations for over two decades, and in this study a recently developed method is utilised to extract AKR bursts from WAVES data, enabling quantitative examination of AKR emission over statistical timescales.

How to cite: Fogg, A. R., Jackman, C. M., Waters, J. E., Bonnin, X., Lamy, L., Cecconi, B., and Issautier, K.: Solar Wind control of Auroral Kilometric Radiation as measured by the Wind Satellite, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-5896,, 2021.

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