Empirical Study of Turbulent Diffusion in Flare Plasma Sheets
Abstract
Velocity fields in the hot (>10 MK) plasma sheets above post-eruption flare arcades have the hallmarks of turbulent flow. Tracking and measuring these velocity fields enables empirical estimation of transport parameters, e.g. turbulent diffusivity, that are important for determining the spectrum of length scales present in the plasma sheet. These transport parameters thus help to set the rate of magnetic reconnection, and may help us to understand how reconnection can be triggered, accelerated, and prolonged in eruptive flares. In this work we show measurements, for the first time, of transport parameters in flare plasma sheets, enabled by high-resolution observations from SDO and local correlation tracking.
- Publication:
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American Astronomical Society Meeting Abstracts #224
- Pub Date:
- June 2014
- Bibcode:
- 2014AAS...22410401M