Solar Active Region:Heating and Dynamics

L Harra-Murnion, S Matthews, H Hara, K Ichimoto
unpublished
It has been frequently observed that in solar active regions the measured line widths are larger than those based on thermal equilibrium widths. This excess width characterised as non-thermal velocity, V nt has been proposed as a signature of the heating mechanism. We analyse the diierence in V nt and dynamics of the hot 1MK loops and cool 1MK loops.
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