Stereoscopic Analysis of CME-related Coronal Activity using STEREO/SECCHI Observations

Details Stereoscopic Analysis of CME-related Coronal Activity using STEREO/SECCHI Observations Stereoscopic Analysis of CME-related Coronal Activity using STEREO/SECCHI Observations

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsh41b..02l&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SH41B-02

Other

7509 Corona, 7513 Coronal Mass Ejections (2101), 7519 Flares, 7531 Prominence Eruptions

Scientific paper

In May 2007, STEREO/SECCHI observed a series of coronal mass ejections (CMEs). Here we present results from an analysis SECCHI and other observations to study the relationship between the low-corona flaring activity, as viewed stereoscopically by SECCHI's ultraviolet imager EUVI, and the CMEs observed by the SECCHI coronagraphs. Activity observed includes prominence activation, eruption and ejection and post-flare loop arcade formation. For several May CME events, we will show the EUVI flaring activity and the corresponding GOES X-ray flare event that is most closely associated with the CME initiation. In some cases, the ejecta can be seen stereoscopically (in 3D) as it crosses the solar disk, allowing a clear identification with the CME material observed off the disk by the SECCHI/COR1 coronagraphs. During this period, the STEREO A and B spacecraft had reached sufficient separation (>6 degrees) to apply stereoscopic analysis to simultaneous EUVI images from the two spacecraft. We will report results of 3D reconstruction of flaring coronal loops and prominences using "tiepointing" and stereoscopy (aka triangulation). This work addresses STEREO's science objective: to understand the causes and evolution of coronal mass ejections.

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