|
|||||
|
|
Coronal Seismology by Means of Kink Oscillation Overtones |
|
| Authors: | J Andries T Van Doorsselaere B Roberts G Verth E Verwichte R Erdélyi |
| Institution: | 1. Centre for Stellar and Planetary Astrophysics, School of Mathematical Sciences, Monash University, 3800, Victoria, Australia 4. Centrum voor Plasma Astrofysica, Katholieke Universiteit Leuven, Celestijnenlaan 200 B, 3001, Leuven, Belgium 2. Centre for Fusion, Space and Astrophysics, Physics Department, University of Warwick, Coventry, CV4 7AL, UK 3. School of Mathematics and Statistics, University of St Andrews, St Andrews, Fife, KY16 9SS, Scotland 5. Solar Physics and Space Plasma Research Centre, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield, S3 7RH, UK |
| Abstract: | The detection of overtones of coronal loop kink oscillations has been an important advance in the development of coronal seismology. It has significantly increased the potential of coronal seismology and has thus initiated important theoretical and observational improvements. New detections of overtones have been made and a reduction of the error bars has been obtained. The efforts of theoreticians to extend eigenmode studies to more general coronal loop models is no longer a matter of checking the robustness of the model but now also allows for the estimation of certain equilibrium parameters. The frequencies of the detected (longitudinal) overtones are in particular sensitive to changes in the equilibrium properties along the loop, especially the density and the magnetic field expansion. Also, attempts have been made to use the limited longitudinal resolution in combination with the theoretical eigenmodes as an additional seismological tool. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |