Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh12a..06o&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SH12A-06
Astronomy and Astrophysics
Astrophysics
[7509] Solar Physics, Astrophysics, And Astronomy / Corona
Scientific paper
In this study we use observations from AIA on SDO, and EUVI on STEREO to study the propagation of coronal "waves" over the entire solar surface by constructing full Sun maps from all three telescopes. By tracing paths that originate at the active region and reflect from the coronal hole boundary we are able to predict the trajectory that "wave" will take upon reflection. We compare the events that took place on 13 and 15 February 2011, from the same active region, and find that the reflected waves have comparable speeds (~280-300 km/s), yet had different incident speeds (~400 vs. ~600 km/s respectively). We interpret the reflected wave as propagating at the fast-mode wave speed. Finally, the high-cadence AIA observations allow us to examine the temporal evolution of the wave in great detail. We compare the evolution of the intensity/thermal response of the several wavelength observations.
Cheng Xiande
Olmedo O. A.
Vourlidas Angelos
Zhang James J.
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