Physics
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.508..299i&link_type=abstract
In: Proceedings of the SOHO 11 Symposium on From Solar Min to Max: Half a Solar Cycle with SOHO, 11-15 March 2002, Davos, Switze
Physics
Sun, Magnetic Field, Photosphere, Corona
Scientific paper
Many examples of transverse (Schrijver et al., 2002; Aschwanden et al., 2002) and longitudinal coronal loop oscillations have now been observed in TRACE 171 Å data (see De Moortel et al., 2002 at this meeting for examples of longitudinal oscillations). These oscillations hold the promise of telling us much about the physics of the corona. However, the mechanisms describing these distinct phenomena are as yet unclear. Magnetogram data from MDI and Kanzelhöhe taken as part of SOHO Joint Observing 144 allows us to use the spatial resolution of MDI and temporal resolution of Kanzelhöhe to probe the photospheric magnetic field at likely footpoint sources of coronal loop oscillations at length and time scales not available to either instrument separately. Variations in the photospheric magnetic field are analysed in conjunction with co-temporally observed TRACE 171 Å derived time series.
de Moortel Ineke
Ireland Jack
Moretti Pier Francesco
Walsh Robert W.
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