Multi-spacecraft observations of energetic particles by STEREO

Details Multi-spacecraft observations of energetic particles by STEREO Multi-spacecraft observations of energetic particles by STEREO

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh44b..04g&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SH44B-04

Physics

Plasma Physics

[7514] Solar Physics, Astrophysics, And Astronomy / Energetic Particles, [7894] Space Plasma Physics / Instruments And Techniques, [7900] Space Weather

Scientific paper

In October 2011 the twin STEREO spacecraft will complete five years in space. The STEREO mission has provided for the first time a three dimensional view of the structures in the solar atmosphere. In 2011, the combination of STEREO with near-Earth observatories like SOHO and SDO provided a complete 360-degrees view of the Sun never achieved before. These outstanding remote-sensing observations of the Sun, together with multi-point in-situ measurements provided new insights in our understanding of the solar activity phenomena. Questions like the physical mechanisms leading to the broad angular spread of energetic particles sometimes observed during Solar Energetic Particle (SEP) events or the particle intensity gradients and temporal variations during ion increases associated with Co-rotating Interaction Regions (CIRs) are only possible using multi-spacecraft observations. In addition, the high-cadence and high spatial resolution allows the study of small scale phenomena and their correlations with the fine structure of the energetic particle spectra. In this work we summarize multi-point particle observations carried out by STEREO, their link to remote-sensing measurements and the importance and lessons learnt for the preparation of future missions to the inner heliosphere like Solar Orbiter and Solar Probe Plus.

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