Hydrodynamics and Diagnostics of Coronal Loops Subject to Dynamic Heating

Abstract

We present preliminary results on hydrodynamic simulations of coronal loops maintained close to stationary conditions by a sequence of microflares. We simulate microflares as small (either randomic or periodic) heating episodes which account for all the “stationary heating”. We synthesize the emission in some lines and bands observable by X-ray instruments. In particular we report the emission in the bands of the Soft X-ray Telescope on board Yohkoh, in the band detected by the Normal Incidence X-ray Telescope and in the lines detected by the X-ray Polychro-mator on board the Solar Maximum Mission. Our scope is both to explore feasibility of directly detecting microvariability, and to devise possible diagnostics of variable vs. steady heating.