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Modeling Active Region Transient Brightenings Observed with X-Ray Telescope as Multi-stranded Loops View all abstracts by submitter

Adam Kobelski   Submitted: 2014-08-22 18:16

Strong evidence exists that coronal loops as observed in extreme ultraviolet and soft X-rays may not be monolithic isotropic structures, but can often be more accurately modeled as bundles of independent strands. Modeling the observed active region transient brightenings (ARTBs) within this framework allows for the exploration of the energetic ramifications and characteristics of these stratified structures. Here we present a simple method of detecting and modeling ARTBs observed with the Hinode X-Ray Telescope (XRT) as groups of zero-dimensional strands, which allows us to probe parameter space to better understand the spatial and temporal dependence of strand heating in impulsively heated loops. This partially automated method can be used to analyze a large number of observations to gain a statistical insight into the parameters of coronal structures, including the number of heating events required in a given model to fit the observations. In this article, we present the methodology and demonstrate its use in detecting and modeling ARTBs in a sample data set from Hinode/XRT. These initial results show that, in general, multiple heating events are necessary to reproduce observed ARTBs, but the spatial dependence of these heating events cannot yet be established.

Authors: Adam R. Kobelski, David E. McKenzie, Martin Donachie
Projects: Hinode/XRT

Publication Status: ApJ (Accepted)
Last Modified: 2014-08-27 12:58
Go to main E-Print page  Forward Modeling Transient Brightenings and Microflares around an Active Region Observed with Hi-C  Source Regions of the Interplanetary Magnetic Field and Variability in Heavy-ion Elemental Composition in Gradual Solar Energetic Particle Events  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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