Understanding the global structure of ICMEs using multispacecraft in-situ observations paired with remote sensing observations

Details Understanding the global structure of ICMEs using multispacecraft in-situ observations paired with remote sensing observations Understanding the global structure of ICMEs using multispacecraft in-situ observations paired with remote sensing observations

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh23c1967r&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SH23C-1967

Physics

[2101] Interplanetary Physics / Coronal Mass Ejections, [2111] Interplanetary Physics / Ejecta, Driver Gases, And Magnetic Clouds, [2194] Interplanetary Physics / Instruments And Techniques

Scientific paper

The global structure of coronal mass ejections (CMEs) is observed by remote sensing instruments, while detailed local measurements of magnetic field, plasma and composition are made in-situ. The difficulty lies in understanding and relating these different types of observations. We present new techniques to better approach this problem. We derive the near-Sun charge state configuration of a generic CME based on plasma outputs from MHD models. These charge states are frozen-in and thus can be compared to in-situ charge state observations. Multispacecraft in-situ observations offer more insight than single-track observations, but their interpretation can be more difficult. We have addressed this difficulty by developing a Delauney triangulation method to combine multispacecraft in-situ observations and infer the global structure of CMEs. We present a description of these techniques and a comparison with data.

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