Simulation of the observed coronal kink instability and its implications for the SDO/AIA

Srivastava, Abhishek, Botha, Gert, Arber, Tony and Kayshap, P. (2013) Simulation of the observed coronal kink instability and its implications for the SDO/AIA. Advances in Space Research, 52 (1). pp. 15-21. ISSN 1879-1948

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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 pi. 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.

Item Type: Article
Subjects: F500 Astronomy
G900 Others in Mathematical and Computing Sciences
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Gert Botha
Date Deposited: 11 Nov 2013 10:45
Last Modified: 12 Jan 2017 16:02

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