Heidelberg 2022 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 5: Near Earth Space
EP 5.2: Vortrag
Dienstag, 22. März 2022, 16:45–17:00, EP-H1
Measurements of cosmic rays by a mini neutron monitor aboard the German research vessel Polarstern — •M. Zoska1, S. Banjac1, S. Burmeister1, H. Giese1, B. Heber1, K. Herbst1, L. Romaneesen1, C. Schwerdt2, D. Strauss3, C. Wallmann1, and M. Walter1 — 1Christian-Albrechts-Universität Kiel, Germany — 2Deutsches Elektronen-Synchrotron Zeuthen, Germany — 3North West University, Potchefstroom, South Africa
Galactic cosmic rays (GCRs) are a direct sample of material from far beyond the solar system. Measurements by various particle detectors have shown that the intensity varies on different timescales, caused by the Sun’s activity. Many studies on GCR intensity decreases are based on the analysis of ground-based neutron monitors. Their measurements depend on the geomagnetic position, and the processes in the Earth’s atmosphere. In order to get a better understanding of the geomagnetic filter over the solar cycle, the above groups agreed on a continous monitoring of the GCR flux as a function of latitude, by installing a portable device aboard the German research vessel Polarstern in 2012. The vessel is ideally suited for this research campaign because it covers extensive geomagnetic latitudes (i.e. goes from the Arctic to the Antarctic) at least once per year. Here we present themeasurements for different latitude surveys including the solar maximum in 2014 and solar minimum in 2019.
The Kiel team received funding from the European Union Horizon 2020 programme under grant agreement No 870405. We thank the crew of the Polarstern and the AWI for supporting our research campaign.