Erlangen 2026 – wissenschaftliches Programm

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EP: Fachverband Extraterrestrische Physik

EP 8: Sun and Heliosphere II

EP 8.2: Vortrag

Donnerstag, 19. März 2026, 11:30–11:45, KH 01.019

Transition of energetic electrons from the solar corona into interplanetary space — •Lilly Zeberer — Universität Potsdam, Institut für Physik und Astronomie, Potsdam, Germany

Solar radio bursts are a phenomenon on the Sun that is closely related to solar flares. They are caused by accelerated energetic particles traveling away from the Sun and are divided into different types. Focusing on type III bursts, their most important feature is the rapid frequency drift from high to low frequencies, corresponding to height in the corona. Using LOFAR data as well as data from the Parker Solar Probe (PSP) FIELDS instrument suite, this work aims to improve a chosen heliospheric density model, especially in the transition region from the solar corona into interplanetary space. Heliospheric density models are an important tool in interpreting radio data, even though the heliosphere is highly structured and they cannot be global. This work uses fitting of the frequency drift of type III radio bursts in combined dynamic spectra of LOFAR and PSP data to then calculate source velocities and observe how they behave as the particles move away from the Sun.

Keywords: Sun; Solar radio bursts; PSP; LOFAR