SMuK 2021 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 2: Sun and Heliosphere II
EP 2.5: Vortrag
Montag, 30. August 2021, 17:45–18:00, H7
First widespread solar energetic particle event observed by Solar Orbiter on 2020 November 29 — •Alexander Kollhoff1, Athanasios Kouloumvakos2, David Lario3, Nina Dresing4, Bernd Heber1, and Robert Wimmer-Schweingruber1 — 1IEAP, Christian Albrechts-Universität zu Kiel, Kiel, Germany — 2IRAP, Université Toulouse III - Paul Sabatier, CNRS, CNES, Toulouse, France — 3NASA Goddard Space Flight Center, Heliophysics Science Division, Greenbelt, USA — 4Department of Physics and Astronomy, University of Turku, Finland
With the launch of Solar Orbiter on 2020 February 10 a new era of multi-spacecraft observations opened up. An excellent example for the potentials of this era are the observations of the first widespread solar energetic particle event of solar cycle 25 on 2020 November 29. During this event relativistic electrons as well as protons with energies >50 MeV were observed by Solar Orbiter (SolO), Parker Solar Probe (PSP), the Solar Terrestrial Relations Observatory (STEREO)-A and multiple near-Earth spacecraft. The particle event was associated with an M4.4 class X-ray flare and accompanied by a coronal mass ejection (CME) and an extreme ultraviolet (EUV) wave as well as a type II and multiple type III radio bursts. Here we will present the in situ particle and remote sensing observations of this event and compare the timing of energetic particles observed at the four different locations with remote sensing observations of the solar source. We will particularly highlight the measurements of energetic electrons and protons by the Energetic Particle Detector (EPD) on board Solar Orbiter.