"Evolution"

Title:		Evolution of Flaring Structures
Authors:		B. Sylwester and J. Sylwester
Abstract:		We present results of the study aimed to analyse the morphology of evolving coronal X-ray flaring structures. Our analysis deals with the Yohkoh SXT observations obtained during flares. In order to remove the telescope PSF blurring and improve the spatial resolution on the images we incorporated the ANDRIL maximum likelihood deconvolution algorithm. Using deconvolved images, we determined the distribution of physical conditions (Temperature-T, Emission Measure-EM) as they change with time for several flares. The results obtained indicate that the ''magnetic connectivity'' pattern is vividly changing as flare progress. We put forward new ''hierarchical'' model of the coronal magnetic field organisation in order to explain the observed evolution of flaring structures.