Transport of Energetic Particles in the Inner Heliosphere

Purpose

Our International Team will carry out observational studies of plasma,
magnetic field and charged particle data observed on Wind, ACE, STEREO,
SOHO, Cluster and Ulysses, to examine and test the theoretical
basis for our understanding of scattering and transport at energies
typical for solar particles. The focus will be on particles from impulsive
solar events which typically originate from a localized source on the solar
disk, have acceleration time scales which are short compared to the
transport time scales, and are not accompanied by large-scale
interplanetary disturbances such as Coronal Mass Ejections and shock waves
which would impose complicated boundary conditions for the processes we are
interested in here. As the morphology of observed particle fluxes even in
these events reflects contributions from a possible lateral transport in
complex magnetic fields in the solar corona and from transport parallel and
possibly perpendicular to the magnetic field embedded in the solar wind, we
will also use concomitant observations of solar radio and X-ray emission to
resolve injection of particles close to the Sun. The project results will
help to improve our knowledge of the structure of magnetic fluctuations and
particle
transport in the inner Heliosphere and aid in identifying key observational
requirements for future space instrumentation intended to address this
problem.

Team Members

 * Mihir Desai, Southwest Research Institute, San Antonio, USA

 * Wolfgang Dröge, University of Würzburg, Germany (Team Leader)

 * Paul Evenson, University of Delaware, USA

 * Bernd Heber, University of Kiel, Germany

 * Timothy S. Horbury, Blackett Laboratory, Imperial College London, UK

 * Julia Kartavykh, Ioffe Physical-Technical Institute, St. Petersburg, Russia

 * Berndt Klecker, MPE Garching, Germany

 * Karl-Ludwig Klein, Observatoire de Paris, Meudon, France

 * Sam Krucker, University of California Berkeley, USA

 * Reinhard Schlickeiser, University of Bochum, Germany

 * Charles W. Smith, University of New Hampshire, USA