Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsh32a0779p&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SH32A-0779
Astronomy and Astrophysics
Astrophysics
7500 Solar Physics, Astrophysics, And Astronomy
Scientific paper
Observations of the first minutes in the life of Coronal Mass Ejections (CMEs) represent the main key into identifying the physical mechanism(s) behind them. Previous observations of CME onsets were limited by factors such as low cadence, small field of view, single-temperature coverage, and lack of 3D information. These limitations are significantly mitigated by the availability of SECCHI observations onboard the STEREO mission. We analyze a series of high-cadence, multi-temperature observations of CME onsets taken with the EUVI/SECCHI imagers tied with high-cadence coronagraphic COR1/SECCHI observations. We discuss how our perception of well-known features pertinent to CME onsets such as dimmings, EIT waves and cavities is shaped by the unique characteristics of SECCHI observations, and of the 3D information available in STEREO obervations in particular. We finally discuss how the generic elements of our observations compare with the expectations of CME models in an attempt to place some constraints on them.
Patsourakos Spiros
Vourlidas Angelos
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