Simulation of the observed coronal kink instability and its implications for the SDO/AIA |
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Authors: | AK Srivastava GJJ Botha TD Arber P Kayshap |
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Institution: | 1. Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263 129, India;2. Physics Department, Centre for Fusion, Space and Astrophysics, University of Warwick, Coventry CV4 7AL, UK |
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Abstract: | Srivastava et al. (2010) have observed a highly twisted coronal loop, which was anchored in AR10960 during the period 04:43 UT-04:52 UT on 4 June 2007. The loop length and radius are approximately 80 Mm and 4 Mm, with a twist of 11.5 π. These observations are used as initial conditions in a three dimensional nonlinear magnetohydrodynamic simulation with parallel thermal conduction included. The initial unstable equilibrium evolves into the kink instability, from which synthetic observables are generated for various high-temperature filters of SDO/AIA. These observables include temporal and spatial averaging to account for the resolution and exposure times of SDO/AIA images. Using the simulation results, we describe the implications of coronal kink instability as observables in SDO/AIA filters. |
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Keywords: | Magnetohydrodynamics (MHD) Magnetic reconnection Corona |
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