EGU21-4996, updated on 04 Mar 2021
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Switchback-like structures observed by Solar Orbiter

Andrey Fedorov1, Philippe Louarn1, Christopher Owen3, Lubomir Prech6, Timothy Horbury2, Alain Barthe1, Alexis Rouillard1, Justin Kasper4, Stuart Bale5, Roberto Bruno7, Helen O’Brien2, Vincent Evans2, Virginia Angelini2, Davin Larson8, Roberto Livi8, and the SWA-PAS, MAG, SWEAP, and FIELDS teams*
Andrey Fedorov et al.
  • 1IRAP UPS CNRS, Toulouse, France (
  • 2Imperial College, London, UK
  • 3MSSL, University College London, UK
  • 4Climate and Space Sciences and Engineering, University of Michigan, USA
  • 5Physics Department, University of California, Berkeley, CA, USA
  • 6Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
  • 7INAF-Istituto di Astrofisica e Planetologia Spaziali, Rome, Italy
  • 8UC Berkeley, Space Sciences Lab, Berkeley, CA
  • *A full list of authors appears at the end of the abstract

During 27th September 2020 NASA Parker Solar Probe (PSP) and ESA-NASA Solar Orbiter (SolO) have been located around the same Carrington longitude and their latitudinal separation was very small as well. Solar wind plasma and magnetic field data obtained throughout this time interval  allows to consider that sometimes the solar wind, observed by both spacecrafts, originates from the same coronal hole region. Inside these time intervals the SolO radial magnetic field experiences several short variations similar to the "switchbacks" regularly observed by PSP. We used the SolO SWA-PAS proton analyzer data to analyze the ion distribution function variations inside such switchback-like events to understand if such events are really "remains" of the alfvenic structures observed below 60 Rs.


Elena Budnik, Illya Plotnikov, Vincent Genot, Emmanuel Penou, Benoit Lavraud, Tony Case, Leon Golub, Kelly Korreck, Michael Stevens, Jim McFadden, Phyllis Whittlesey, George Ho, Matthieu Berthomier, Peter Gary, Ruth Skoug, John Steinberg, John Belcher, John Richardson, Adam Szabo, Dennis Gallagher, Qiang Hu, Nikolai Pogorelov, Gary Zank, Steven Cranmer, Jasper Halekas, Ken Wright

How to cite: Fedorov, A., Louarn, P., Owen, C., Prech, L., Horbury, T., Barthe, A., Rouillard, A., Kasper, J., Bale, S., Bruno, R., O’Brien, H., Evans, V., Angelini, V., Larson, D., and Livi, R. and the SWA-PAS, MAG, SWEAP, and FIELDS teams: Switchback-like structures observed by Solar Orbiter, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-4996,, 2021.

Display materials

Display file

Comments on the display material

to access the discussion