000004328 001__ 4328
000004328 005__ 20191216112648.0
000004328 037__ $$aPOSTER-2019-0106
000004328 100__ $$aShestov, S
000004328 245__ $$aSimulation of dynamics of hot plasma in postflare loops
000004328 260__ $$c2019
000004328 269__ $$c2019-06-10
000004328 520__ $$aWe investigate dynamics of hot plasma in postflare coronal loops using MHD modeling and calculating synthetic images/fluxes in various SDO channels and other spectral bands – GOES and Mg XII 8.42 A spectral line. Our aim is to investigate dynamics of evaporation and condensation/draining of hot plasma in postflare loops. We use 2D and 3D MHD simulations, start with loop-like initial magnetic field and realistic plasma parameters. For the solving of MHD equations we use MPI-AMRVAC code with gravity, thermal conduction and radiative loses. We apply arbitrary heating in the chromosphere which mimic chromospheric heating by the energetic electrons from the reconnection region. The plasma starts to evaporate and soon fills the overlying magnetic loop system. The observed plasma characteristics – temperature, density, flow, and their dynamics strongly depend on adopted physical conditions. In particular, strength of magnetic field plays important role, as well as heating rate, depth and the size of the heated region.  To constrain the possible range of parameters we calculate synthetic images/fluxes in various EUV and X-ray channels with the use of the FoMo code. We compare calculated images with observational data (we chose one large-scale and one small-scale loop associated with ~B-class flares) and identify probable physical conditions, in which synthetic data match observations. We were able to find heating regimes to match the observations; beside we see several interesting features that can be revealed only in 2D or 3D modeling. 
000004328 536__ $$a3PRODPROBA3/$$c3PRODPROBA3/$$f3PRODPROBA3
000004328 594__ $$aNO
000004328 6531_ $$aloops
000004328 6531_ $$asimulations
000004328 6531_ $$aMHD
000004328 700__ $$aVan Doorsselaere, T
000004328 700__ $$aZhukov, A
000004328 773__ $$t9th Coronal Loop Workshop, St. Andrews
000004328 8560_ $$fsergei.shestov@observatoire.be
000004328 85642 $$ahttps://loops9.wp.st-andrews.ac.uk/
000004328 980__ $$aCPOSTER