Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsh13b1525p&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SH13B-1525
Physics
7509 Corona, 7514 Energetic Particles (2114), 7519 Flares, 7836 Mhd Waves And Instabilities (2149, 2752, 6050), 7851 Shock Waves (4455)
Scientific paper
The high temporal and spatial resolution of the SECCHI/STEREO EUV telescopes allowed us to uncover and study small scale events with a morphology identical to large-scale coronal mass ejections observed as coronal waves and dimmings on the solar disk. They are seen to develop from microflaring sites in a wide angular sector of the quiet Sun. The events observed differ from those on large scale by smaller geometrical sizes, shorter lifetime, and the reduced intensity of flare and dimmings. The area and total intensity of the small scale dimmings are 2 orders of magnitude smaller than for large scale events. The maximum front speed of SECCHI microwaves is 18.5 km/s, which is 1 order of magnitude smaller than slow magnetosonic wave speed in correspondent layers of solar corona.
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