Initial value problem approach of two regions of system solar: the continuous spectrum

4th International Workshop & Summer School on Plasma Physics 2010

González, Ángel De Andrea^1

Departamento de Física, Escuela Politécnica Superior, Universidad Carlos III de Madrid, Av. Universidad 30, 28911 Leganés, Spain^1

关键词: Continuous spectrum;    Continuum modes;    Helioseismology;    Mathematical procedures;    Normal mode methods;    Quasi-isothermal;    Solar atmosphere;    Two-region models;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/516/1/012016/pdf
DOI  :  10.1088/1742-6596/516/1/012016

来源: IOP

【 摘 要 】

The standard mathematical procedures in Helioseismology field are based on normal mode approach for various models of solar interior and atmosphere. We consider a two region model of a system solar interior and solar atmosphere. For simplicity, the two different regions are assumed quasi-isothermal, semi-infinite, without magnetic fields and separated by a boundary z=0. It was found useful to phrase of stability as initial value problem (IPV) in order to ensure the inclusion of certain continuum modes otherwise neglected. In addition to discrete mode (f-mode), sets of continuum modes due to a branch cuts in the complex plane, not treated explicitly in the literature, appears. It will be seen that an ambiguity of the usual normal mode method is avoided.