Physics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spnr.conf...73g&link_type=abstract
Solar Physics with the Nobeyama Radioheliograph, Proceedings of Nobeyama Symposium 2004, held in Kiyosato, Japan, October 26- 29
Physics
Scientific paper
Putting additional constraints on physical conditions based on the observed quantities, microwave imaging data crucially enhance reliability of results and consistency of interpretations. This is why microwaveimaging data is a necessary constituent of observational data sets on solar flares, and they are widely used in their analyses. At the same time, to identify essential features and study their behavior, one has to deal with large data sets of hundreds frames. However, this allows a single image, a variance map, that represents overall dynamics of the event. In this review, methods are presented that allow identification of active flare sources in large data cubes and investigation of the detected positions of sources in both Stokes I and V images using analyses of variance maps, combined difference images, and total flux time profiles. By analyzing the similarity of time profiles for different-polarity Stokes V sources, one can reveal magnetic connectivity. Imaging techniques at the NoRH in both the local and remote modes as well as interactive data analysis using IDL are also briefly discussed.
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