Kinematic analysis and comparison of the CME and its related EIT wave for January 10, 2010 event

Details Kinematic analysis and comparison of the CME and its related EIT wave for January 10, 2010 event Kinematic analysis and comparison of the CME and its related EIT wave for January 10, 2010 event

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh23b1844z&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH23B-1844

Physics

Plasma Physics

[7509] Solar Physics, Astrophysics, And Astronomy / Corona, [7513] Solar Physics, Astrophysics, And Astronomy / Coronal Mass Ejections, [7549] Solar Physics, Astrophysics, And Astronomy / Ultraviolet Emissions, [7836] Space Plasma Physics / Mhd Waves And Instabilities

Scientific paper

EIT wave, typically appearing as a diffuse brightening propagating across the Sun, is one of the major discoveries of the Extreme ultraviolet Imaging Telescope (EIT) on SOHO. But the physical nature of the so-called EIT wave is strongly debated. In order to understand the relationship between the EIT wave and its related Coronal mass ejection (CME), we investigate the morphology and kinematics of the CME-EIT wave event happened on January 10, 2010. Using the observations of SECCHI/EUVI, SECCHI/COR1 and SECCHI/COR2 onboard the STEREO-B, we track the shape and movements of the CME fronts along different radial directions to the distance of about 15 solar radii; While for the EIT wave, we determine the propagation of the wave front on the solar surface along different propagation directions. Our tracking results demonstrate that the CME front propagation is much faster than the propagation of the EIT wave on the surface. While this CME exhibits deceleration during its moving out, the EIT wave propagates at nearly constant speed. We also compare their propagation speeds to the characteristic speeds, and find out that both the CME and the EIT wave propagate beyond and with the fast-mode speed.

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