Detectability of chromospheric evaporation fronts in solar flares

Astronomy and Astrophysics – Astrophysics

Scientific paper

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11

Sun: Corona, Sun: Diagnostics, Sun: Flares

Scientific paper

We compute the surface brightness distribution of the chromospheric evaporation front during the flare impulsive phase in the pass-band of the imaging Soft X-ray Telescope (SXT) on board Yohkoh. Hydrodynamic simulations of the flaring plasma allow us to derive the evolution of density and temperature distribution and therefore of emission distribution across the evaporation fronts. We show that SXT - as well as imaging X-ray telescopes with equivalent or better spatial and temporal resolution - should be able to detect clearly the front and follow its evolution along the loop.

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