Toward better understanding of the origin of CMEs using combined SDO/AIA and STEREO/SECCHI data (Invited)

Details Toward better understanding of the origin of CMEs using combined SDO/AIA and STEREO/SECCHI data (Invited) Toward better understanding of the origin of CMEs using combined SDO/AIA and STEREO/SECCHI data (Invited)

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh21c..06n&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH21C-06

Astronomy and Astrophysics

Astrophysics

[7509] Solar Physics, Astrophysics, And Astronomy / Corona, [7513] Solar Physics, Astrophysics, And Astronomy / Coronal Mass Ejections, [7519] Solar Physics, Astrophysics, And Astronomy / Flares, [7549] Solar Physics, Astrophysics, And Astronomy / Ultraviolet Emissions

Scientific paper

Thanks to uninterrupted observations by SOHO, solar cycle 23 has seen great progress in characterizing coronal mass ejections (CMEs). But the way CMEs are dramatically accelerated is still not well understood, letting most of the proposed models remain as possibilities. This is primarily because of the lack of high cadence observations in the low corona, and also of mapping between EUV or X-ray and coronagraphic manifestations of CMEs. Now these problems are largely ameliorated by continuous data from SDO/AIA with ~12 second cadence (and 4k x 4k 0.5" pixels to cover more than the full disk in seven EUV channels), which can be compared in detail with white-light observations. As solar activity started to increase this year, a number of large CMEs occurred and their associated phenomena were well observed by AIA. This talk gives examples of CMEs jointly observed by AIA and STEREO/SECCHI, and discusses how to clarify the sequence of physical processes responsible for CME initiation and acceleration. Emphasis is given to those disk events in Earth view that were well observed by the COR-1 telescope(s) on STEREO as limb events, in which the mapping of the eruption in the low corona and at larger distance can be made in a relativelystraightforward manner.

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