An in situ Type III radio burst observed by Parker Solar Probe

M. Pulupa , S. D. Bale , J. W. Bonnell , A. W. Case , Thierry Dudok de Wit (1) , K. Goodrich , K. Goetz , P. Harvey , J. C. Kasper , K. E. Korreck , D. E. Larson , R. Livi , R. J. Macdowall , M. Maksimovic (2) , D. Malaspina , M. L. Stevens , P. L. Whittlesey

1 LPC2E - Laboratoire de Physique et Chimie de l'Environnement et de l'Espace
2 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics

We present Parker Solar Probe observations of an in situ Type III radio burst. On 2020 May 27, during PSP's fifth encounter with the Sun, the PSP FIELDS/RFS radio receiver observed a Type III radio burst extending down to the local plasma frequency. Locally generated Langmuir waves are also present, apparent in the RFS spectral data and captured in high time resolution waveforms from the FIELDS/TDS and DFB receivers. We analyze the properties of the in situ waves and PSP SWEAP/SPAN observations of the electron beam associated with the Type III, and compare to previous measurements at 1 au.

Keywords: Energetic particles; SOLAR PHYSICS; ASTROPHYSICS; ASTRONOMY; Kinetic waves and instabilities; SPACE PLASMA PHYSICS; Radiation processes; Wave/particle interactions

Domains: Sciences of the Universe [physics]

M. Pulupa, S. D. Bale, J. W. Bonnell, A. W. Case, Thierry Dudok de Wit, et al.. An in situ Type III radio burst observed by Parker Solar Probe. American Geophysical Union, 2020, Online, France. ⟨insu-03560375⟩