Speaker
Description
First Name: Panisara
Last Name: Thepthong
Affiliation: LPC2E, CNRS, CNES, University d'Orléans
All Authors: Panisara Thepthong, Matthieu Kretzschmar, Milan Maksimovic, Aikaterini Pesini
Abstract: Solar type III radio bursts are common radio emissions generated by energetic electron beams traveling through the solar corona and wind. They can serve as important remote sensing tools for studying plasma and electron beams in the solar wind. In this work, we analyse simultaneous observations from the Solar Orbiter (SolO) and the Parker Solar Probe (PSP) to investigate these bursts across a range of distances and observational angles. For each burst and spacecraft, the fluctuations at a given scale and frequency is defined as the ratio of the maximum flux spectra, determined from the time profiles, to a Gaussian average of this spectra at the corresponding scale. The fluctuations obtained with both spacecraft are compared for their level (standard deviation) and similarities (cross correlation). Our results indicate that good agreement in the fluctuation amplitudes between the two spacecraft is commonly observed. The cross-correlation of the fluctuation between PSP and SolO spans a broad range and shows no clear dependence on radial distance from the Sun or spacecraft separation. This characterization of the fluctuations also provides a quantitative basis for future studies of fine spectral structures, such as striae, which typically display as strong fluctuations on the type III spectrum.