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- W2076201844 abstract "Different dynamical phenomena in the solar corona are investigated in thepresent Thesis. We aim to investigate using a semi-analytical approach of theeffect of the surrounding environment on the period ratio of the fundamentalto first harmonic of a thin coronal loop. Investigation of geometrical effects aretaken into account, namely asymmetry of the coronal loop, i.e. its deviationfrom a semi-circular shape.It is found that if we are to obtain more accurate estimates on the effectof the environment on the transversal oscillations of a coronal loop, we haveto take into account that in reality a coronal loop depends on more than onecoordinate, secondly, isothermal supposition of the loop and its environmentalso need refinement, as observations show that the loops are not always inhydrostatic equilibrium. The study on the expansion of a coronal loop indicatesthat in order to have more realistic results one would need to include dampingprocesses, resonant absorption and cooling processes. Further in an expandingloop, the growth of the amplitude due to emergence and decay of amplitude dueto resonant damping or cooling will be competing processes. When it expands,a loop can also have accelerated motion upwards in the corona with cross sectionmodification of the ux tube.The final piece of work in this thesis is a numerical investigation into a 2Dmagnetic reconnection process, where we study reconnection rates and how differentparameters such as resistivity and Hall term affect the process of field linereconnection. The Hall effect does speed up the reconnection process, but itdepends significantly on the initial conditions of the problem. These initial conditions,i.e. different magnetic field configuration, density stratification, gravityplay an important role in the reconnection process." @default.
- W2076201844 created "2016-06-24" @default.
- W2076201844 creator A5028544036 @default.
- W2076201844 date "2013-08-22" @default.
- W2076201844 modified "2023-09-23" @default.
- W2076201844 title "Dynamical phenomena in stratifiedsolar coronal plasma" @default.
- W2076201844 hasPublicationYear "2013" @default.
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