Energetic Particle Tracing of Magnetic Connectivity and Solar Injection in the Inner Heliosphere

Details Energetic Particle Tracing of Magnetic Connectivity and Solar Injection in the Inner Heliosphere Energetic Particle Tracing of Magnetic Connectivity and Solar Injection in the Inner Heliosphere

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsh43b1525m&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SH43B-1525

Physics

2100 Interplanetary Physics, 2101 Coronal Mass Ejections (7513), 2114 Energetic Particles (7514), 2134 Interplanetary Magnetic Fields, 7514 Energetic Particles (2114)

Scientific paper

Several advances expected in energetic particle research in the context of possible observations with the Solar Orbiter (SOLO) and the Inner Heliospheric Sentinels (IHS) are presented. Since propagation effects are expected to have a much smaller influence on particle profiles closer to the Sun compared to an observer at the Earth, energetic particle observations obtained with Solar Orbiter (that will spend roughly half of its time inside 0.5 AU) and IHS will provide a more accurate estimation of the onset times of solar energetic particle events and make multiple particle injections detectable. Furthermore, fine-time resolution energetic particle measurements obtained by SOLO along with the more detailed information on solar activity (CMEs, electromagnetic radiation) available from SOLO, from other spacecraft, and from ground-based instruments, compared e.g. to Helios, will make possible valuable investigations in much better observed events of the relative timing of injection between energetic electrons and ions in close linkage with the plasma and radiation conditions in their source regions on the Sun. We will also demonstrate how the intensities and angular distributions of near-relativistic electrons which are ideal field line tracers - can be used as a diagnostic tool to monitor, through SOLO and IHS measurements, the connectivity of Interplanetary Magnetic field lines threading through Interplanetary Coronal Mass Ejections (ICMEs) in the inner heliosphere.

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