Astronomy and Astrophysics – Astronomy
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011spd....42.1809s&link_type=abstract
American Astronomical Society, SPD meeting #42, #18.09; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
Groundbreaking observations of the low solar corona at extreme ultraviolet (EUV) wavelengths have been provided by the EIT instrument on board SOHO for more than 15 years. At the beginning of 2007, the EUVI instruments onboard the twin STEREO S/C opened doors and commenced to image the EUV low corona with a better cadence and better spatial resolution from two vantage points off the Sun-Earth line. And now, since February 2010 the AIA instrument on board the Solar Dynamics Observatory observes the low EUVI corona at a 10 sec cadence in 8 wavelengths. Despite the increasing quality of the EUV observations, they have not been fully exploited. A customized wavelet-based image cleaning and enhancing technique that exploits the multi-scale nature of the observed solar features has been developed (Stenborg et al., 2008) to maximize the scientific return of the EIT observations. We have now adapted it to work with STEREO/EUVI and SDO/AIA images. Its application has already helped unveil phenomena only theorized before, as well as revealed phenomena that have not found a satisfactory explanation yet. In this presentation, a brief survey of the new products and recent discoveries will be shown.
Howard Ralph
Stenborg Guillermo A.
Vourlidas Angelos
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