Automatic detection and statistical analysis of intensity oscillations in the solar corona with SDO

TitreAutomatic detection and statistical analysis of intensity oscillations in the solar corona with SDO
Type de publicationConference Paper
Year of Publication2010
AuteursAuchère, F., Bocchialini K., Solomon J., Gabriel A., and Tison E.
Conference Name38th COSPAR Scientific Assembly
Résumé

We present the generalization to SDO data of our automatic oscillation detection algorithm. This technique was successfully tested using EIT data on board SOHO at 19.5 nm from January 1997 to September 2008, i.e almost the entire solar cycle 23. In the EIT data set we detected 400 oscillations whose periods range between 3.4 and 13.6 h with a maximum around 6-7 hours. Most of the oscillations are localized in coronal structures associated with active regions and last several tens of hours. The AIA data will allow the detection of similar events in several coronal temperature bands simultaneously, which will help understand their physical nature.