Speaker
Patrick Kühl
(University of Kiel)
Description
Ground Level Enhancements (GLEs) are solar energetic particle (SEP) events that are recorded by ground-based instrumentation. The energy of the particles is so high that they produce secondary particles, i.e. protons and neutrons, which are detected as sudden increases in cosmic ray intensities measured by e.g. neutron monitors. Since the launch of SOHO in December 1995 the neutron monitor network recorded 16 GLEs. The Electron Proton Helium INstrument on board SOHO has been designed to measure protons and helium up to 53 MeV/nucleon as well as electrons up to 8.3 MeV. Above these energies, particles penetrate all detector elements and thus, a separation between different particle species becomes more complicated. Recently we developed a method that allows deriving the energy spectrum for penetrating protons up to almost 1 GeV/nucleon. In this contribution we present the integrated fluences of solar energetic protons for the 16 above-mentioned GLEs and compare them to previous results.
Author
Prof.
Bernd Heber
(University of Kiel)
Co-authors
Andreas Klassen
(University of Kiel)
Konstantin Herbst
(Christian-Albrechts-Universität zu Kiel)
Nina Dresing
(IEAP, Universtiy of Kiel, Germany)
Patrick Kühl
(University of Kiel)
