Volume 569, September 2014
|Number of page(s)||17|
|Section||Catalogs and data|
|Published online||30 September 2014|
SEPServer catalogues of solar energetic particle events at 1 AU based on STEREO recordings: 2007–2012
IAASARS, National Observatory of Athens,
2 Christian-Albrechts-Universitaet zu Kiel, Leibnizstrasse 11, 24118 Kiel, Germany
3 Observatoire de Paris, Meudon, LESIA-CNRS UMR 8109, 92195 Meudon, France
4 Department of Physics, POB64, University of Helsinki, 00014 Helsinki, Finland
5 Department of Physics and Astronomy, University of Turku, Finland
6 Department of Physics, University of Ioannina, Greece
7 DH Consultancy BVBA, Leuven, Belgium
8 California Institute of Technology, MC 290-17, Pasadena, CA 91125, USA
9 SRG, University of Alcalá, 28871 Alcalá de Henares, Spain
Accepted: 8 June 2014
The Solar Terrestrial Relations Observatory (STEREO) recordings provide an unprecedented opportunity to study the evolution of solar energetic particle (SEP) events from different observation points in the heliosphere, allowing one to identify the effects of the properties of the interplanetary magnetic field (IMF) and solar wind structures on the interplanetary transport and acceleration of SEPs. Two catalogues based on STEREO recordings, have been compiled as a part of the SEPServer project, a three-year collaborative effort of eleven European partners funded under the Seventh Framework Programme of the European Union (FP7/SPACE). In particular, two instruments on board STEREO have been used to identify all SEP events observed within the descending phase of solar cycle 23 and the rising phase of solar cycle 24 from 2007 to 2012, namely: the Low Energy Telescope (LET) and the Solar Electron Proton Telescope (SEPT). A scan of STEREO/LET protons within the energy range 6–10 MeV has been performed for each of the two STEREO spacecraft. We have tracked all enhancements that have been observed above the background level of this particular channel and cross-checked with available lists of interplanetary coronal mass ejections (ICMEs), stream interaction regions (SIRs), and shocks, as well as with the reported events in literature. Furthermore, parallel scanning of the STEREO near relativistic electrons has been performed in order to pinpoint the presence (or absence) of an electron event in the energy range of 55–85 keV, for all of the aforementioned proton events included in our lists. We provide the onset and peak time as well as the peak value of all events for both protons and electrons, the relevant solar associations in terms of electromagnetic emissions, soft and hard X-rays (SXRs and HXRs). Finally, a subset of events with clear recordings at both STEREO spacecraft is presented together with the parent solar events of these multispacecraft SEP events.
Key words: Sun: particle emission / Sun: heliosphere / Sun: flares / solar-terrestrial relations / Sun: X-rays, gamma rays / catalogs
© ESO, 2014
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