Speaker
Prof.
Leon Kocharov
(University of Oulu, Finland)
Description
We perform a comparative study of the time-profile morphology of solar high-energy particle emissions including relativistic electrons in three energy channels of SOHO/EPHIN, relativistic protons as registered by the worldwide network of neutron monitors, and ~100 MeV/n protons and helium in several energy channels of SOHO/ERNE. Based on numerical modeling of the interplanetary transport, we formulate a simple method for resolving the high-energy particle sources operating in solar corona during first hour of the high-energy particle events. The method is applied to Ground Level Enhancement (GLE) and Solar Energetic Particle (SEP) events of the solar cycle 23. We conclude that depending on the GLE-SEP event scenario and detector’s vantage point, the observed particles originate from up to three sources. Possible nature of the sources is discussed in the framework of previous and new models of the high-energy particle production associated with global coronal (EIT) waves and CME bow shocks within five solar radii from the Sun.
| Registration number following "ICRC2015-I/" | 127 |
|---|---|
| Collaboration | -- not specified -- |
Primary author
Prof.
Leon Kocharov
(University of Oulu, Finland)
Co-authors
Dr
Andreas Klassen
(Christian-Alberchts-Universität zu Kiel, Germany)
Prof.
Eino Valtonen
(University of Turku, Finland)
Prof.
Ilya Usoskin
(University of Oulu, Finland)
