Europlanet Science Congress 2021
Virtual meeting
13 – 24 September 2021
Europlanet Science Congress 2021
Virtual meeting
13 September – 24 September 2021
EPSC Abstracts
Vol. 15, EPSC2021-533, 2021
European Planetary Science Congress 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

In-Situ Multi-Spacecraft and Remote Imaging Observations of the First CME Detected by Solar Orbiter and BepiColombo

Emma Davies1,8, Christian Möstl2,3, Matthew Owens4, Andreas Weiss2,3,5, Tanja Amerstorfer2, Jürgen Hinterreiter2,5, Maike Bauer2, Rachel Bailey6, Martin Reiss2,3, Robert Forsyth1, Timothy Horbury1, Helen O'Brien1, Vincent Evans1, Virginia Angelini1, Daniel Heyner7, Ingo Richter7, Hans-Ulrich Auster7, Werner Magnes2, Wolfgang Baumjohann2, David Fischer2, and the RAL Space STEREO HI Team*
Emma Davies et al.
  • 1Imperial College London, Space and Atmospheric Group, Physics, United Kingdom of Great Britain
  • 2Space Research Institute, Austrian Academy of Sciences, Graz, Austria
  • 3Institute of Geodesy, Graz University of Technology, Graz, Austria
  • 4Space and Atmospheric Electricity Group, Department of Meteorology, University of Reading, Reading, UK
  • 5Institute of Physics, University of Graz, Graz, Austria
  • 6Conrad Observatory, Zentralanstalt für Meteorologie und Geodynamik, Vienna, Austria
  • 7Technical University of Braunschweig, Braunschweig, Germany
  • 8University of New Hampshire, NH, USA
  • *A full list of authors appears at the end of the abstract

On April 19th 2020 a CME was detected by Solar Orbiter at a heliocentric distance of 0.8 AU and was also observed in-situ on April 20th by both Wind and BepiColombo. During this time, BepiColombo had just completed a flyby of the Earth and therefore the longitudinal separation between BepiColombo and Wind was just 1.4°. The total longitudinal separation of Solar Orbiter and both spacecraft near the Earth was less than 5°, providing an excellent opportunity for a radial alignment study of the CME. We use the in-situ observations of the magnetic field at Solar Orbiter with those at Wind and BepiColombo to analyse the large-scale properties of the CME and compare results to those predicted using remote observations at STEREO-A, providing a global picture of the CME as it propagated from the Sun to 1 AU.


David Barnes, Jackie Davies, Richard Harrison

How to cite: Davies, E., Möstl, C., Owens, M., Weiss, A., Amerstorfer, T., Hinterreiter, J., Bauer, M., Bailey, R., Reiss, M., Forsyth, R., Horbury, T., O'Brien, H., Evans, V., Angelini, V., Heyner, D., Richter, I., Auster, H.-U., Magnes, W., Baumjohann, W., and Fischer, D. and the RAL Space STEREO HI Team: In-Situ Multi-Spacecraft and Remote Imaging Observations of the First CME Detected by Solar Orbiter and BepiColombo, European Planetary Science Congress 2021, online, 13–24 Sep 2021, EPSC2021-533,, 2021.