Three-Dimensional Motion of Plasmas Associated with a Coronal Mass Ejection Observed with NOrikura Green-Line Imaging System (NOGIS)

Details Three-Dimensional Motion of Plasmas Associated with a Coronal Mass Ejection Observed with NOrikura Green-Line Imaging System (NOGIS) Three-Dimensional Motion of Plasmas Associated with a Coronal Mass Ejection Observed with NOrikura Green-Line Imaging System (NOGIS)

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006pasj...58..165s&link_type=abstract

Publications of the Astronomical Society of Japan, Vol.58, No.1, pp. 165-175

Astronomy and Astrophysics

Astronomy

2

Sun: Corona, Sun: Coronal Mass Ejections (Cmes), Sun: Magnetic Fields, Sun: Oscillations

Scientific paper

In order to investigate the structure and the driving mechanism of Coronal Mass Ejections (CMEs), it is important to examine in detail the magnetic field structure in the low corona. NOrikura Green-line Imaging System, with its unique capability of Doppler imaging, was used to study a CME and its source region on 1999 May 7. Prior to the CME, a small loop at the north-east limb moved toward a neighboring larger loop in the plane of the sky. Then, the small loop apparently destabilized the large loop, resulting in the CME with a red-shifted motion. The CME propagated non-radially in the plane of the sky. These observations indicate that two loop systems were involved in this CME, and the direction of mass ejection was determined by the magnetic field configuration around the source region and the location of the initial energy release in the magnetic field structure. A brief discussion is given on the loop oscillation phenomenon observed during this event.

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