Modeling the 31 December 2007 Coronal Mass Ejection and Its Impact at Messenger

Details Modeling the 31 December 2007 Coronal Mass Ejection and Its Impact at Messenger Modeling the 31 December 2007 Coronal Mass Ejection and Its Impact at Messenger

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsh13b1543d&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SH13B-1543

Statistics

Computation

2101 Coronal Mass Ejections (7513), 2111 Ejecta, Driver Gases, And Magnetic Clouds, 2134 Interplanetary Magnetic Fields, 7833 Mathematical And Numerical Techniques (0500, 3200)

Scientific paper

The three-dimensional numerical hydrodynamic model, ENLIL, is used to investigate the evolution of a coronal mass ejection (CME) observed on 31 December 2007. The CME is launched into a tilted-dipole ambient solar wind flow that is appropriate around solar activity minimum. Accurate computation of the background solar wind parameters, provided by the empirical WSA model, is crucial for modeling transient disturbances as they propagate and interact with magnetic structures in the inner heliosphere, such as the heliospheric current sheet. The CME was launched using the angular width, speed, and direction of propagation determined by the geometric localization technique. This technique utilizes a series of lines of sight from two space-based coronagraphs to determine gross propagation characteristics of CMEs in three- dimensional space. We compare the results of our model analysis to observations from Messenger. We also discuss the interaction of the CME with the heliospheric current sheet.

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