Thermal Time Evolution of Non-Flaring Active Regions Determined by SDO/AIA

Wright, P. J. , Hannah, I. , Viall, N., MacKinnon, A. , Ireland, J. and Bradshaw, S. (2017) Thermal Time Evolution of Non-Flaring Active Regions Determined by SDO/AIA. 48th SPD Meeting, Portland, OR, USA, 21-25 Aug 2017.

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Abstract

We present the pixel-level time evolution of DEM maps from SDO/AIA data using two different methods (Hannah et al. 2012; Cheung et al. 2015). These sets of Differential Emission Measure (DEM) maps allow us to determine the slopes of the DEM throughout non-flaring structures, and investigate how this changes with time, a crucial parameter in terms of how these flux tubes are being heated. We present this analysis on both real and synthetic data allowing us to understand how robustly we can recover the thermal time evolution. As this analysis also produces the time series in different temperature bands we can further investigate the underlying heating mechanisms by applying a variety of techniques to probe the frequency and nature of the heating, such as time-lag analysis (Viall & Klimchuck 2012; 2016), power spectrum analysis (Ireland et al. 2015), and Local Intermittency Measure (Dinkelaker & MacKinnon 2013a,b).

Item Type:Conference or Workshop Item
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:MacKinnon, Dr Alexander and Wright, Mr Paul and Hannah, Dr Iain
Authors: Wright, P. J., Hannah, I., Viall, N., MacKinnon, A., Ireland, J., and Bradshaw, S.
College/School:College of Science and Engineering > School of Physics and Astronomy
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