Working Group 2

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Revision as of 05:01, 30 May 2013 by Bvrsnak (talk | contribs) (Scientific Questions)
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Theory group led by Bojan Vrsnak (Croatia) and Yuming Wang (China)


Scientific Objectives

  • Initiation of CMEs and their take-off dynamics ("acceleration stage")
  • Heliospheric dynamics of ICMEs and evolution of their structure
  • Relationship between empirical, analytical, and numerical propagation models and comparison with observations; forecasting aspects
  • CME/ICME-associated phenomena (flares, shocks, etc.)

Scientific Questions

Which mechanisms, processes, forces are governing the CME take-off and ICME propagation?

- What is the role of the flare-associated reconnection?

- What is the role of emerging flux and poloidal-flux injection?

- How long the Lorentz force dominates over the aerodynamic drag

- How the inductive effects affect the CME eruption and ICME propagation?

- What is the role of the ICME/ambient-field reconnection?

How much variable ambient conditions affect ICMEs?

- Which processes are involved in ICME-ICME interactions?

- How ICME-ICME interactions affect the dynamics and structure of ICMEs?

- How high-speed solar wind streams (corotating interacting regions) affect ICMEs?

- How the ICME-driven shock evolves in the decreasing Alfven-velocity environment?

What is the cause of "problematic" ICMEs, i.e., ICMEs without clear CME counterparts near the Sun?

Can we find examples of front-side full halo CMEs in C2, but have no ICME signatures at 1 AU? Does this kind of event exist or not?

What are event periods which need special attention for linking solar to in situ observations?

  • interacting events, very fast or very slow CMEs, or other special properties
  1. late July to early August 2010
  2. February 2011
  3. early March 2012
  4. July 2012

Future Plan