EGU22-3859
https://doi.org/10.5194/egusphere-egu22-3859
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Polarization of Langmuir waves observed by RPW-TDS instrument on Solar Orbiter during Type III radio bursts

Jan Soucek1, Sampath Bandara1, David Pisa1, Ondrej Santolik1, Milan Maksimovic2, Thomas Chust3, Yuri Khotyaintsev4, Antonio Vecchio5,2, Matthieu Kretzschmar6, Robert Wimmer-Schweingruber7, Lars Berger7, Javier Rodriquez-Pacheco8, and Raul Gomez-Herrero8
Jan Soucek et al.
  • 1Institute of Atmospheric Physics of the Czech Academy of Sciences, Dept. of Space Physics, Prague, Czech Republic
  • 2LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, Paris, France
  • 3LPP, CNRS, Ecole Polytechnique, Sorbonne Université, Observatoire de Paris, Université Paris-Saclay, Palaiseau, Paris, France
  • 4Swedish Institute of Space Physics, Uppsala, Sweden
  • 5Radboud Radio Lab, Department of Astrophysics, Radboud University, Nijmegen, The Netherlands
  • 6LPC2E, CNRS, 3A avenue de la Recherche Scientifique, Orléans, France
  • 7Institut für Experimentelle und Angewandte Physik, Christian- Albrechts-Universität zu Kiel, Kiel, Germany
  • 8Universidad de Alcalá, Space Research Group, 28805 Alcalá de Henares, Spain

We investigate the polarization of Langmuir waves observed by the Time Domain Sampler (TDS) module of the Radio and Plasma Waves instrument on Solar Orbiter during several extensive Type III burst events. During its two-year-long cruise phase, Solar orbiter often crossed the source region of the Type III radio emission and observed the Langmuir waves generated by solar energetic electrons. The waves are known to exhibit complex modulation and often non-trivial elliptical polarization which sometimes rapidly changes on the timescales of tens of milliseconds. We show that the observed waveforms are typically composed of multiple sub-packets with a relatively short coherence length. We investigate the correlation between the polarization of the waves, simultaneously observed energetic electrons beams and other plasma properties.

How to cite: Soucek, J., Bandara, S., Pisa, D., Santolik, O., Maksimovic, M., Chust, T., Khotyaintsev, Y., Vecchio, A., Kretzschmar, M., Wimmer-Schweingruber, R., Berger, L., Rodriquez-Pacheco, J., and Gomez-Herrero, R.: Polarization of Langmuir waves observed by RPW-TDS instrument on Solar Orbiter during Type III radio bursts, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-3859, https://doi.org/10.5194/egusphere-egu22-3859, 2022.