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3d mhd models of active region loops
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ofman, Leon |
| Copyright Year | 2004 |
| Description | Present imaging and spectroscopic observations of active region loops allow to determine many physical parameters of the coronal loops, such as the density, temperature, velocity of flows in loops, and the magnetic field. However, due to projection effects many of these parameters remain ambiguous. Three dimensional imaging in EUV by the STEREO spacecraft will help to resolve the projection ambiguities, and the observations could be used to setup 3D MHD models of active region loops to study the dynamics and stability of active regions. Here the results of 3D MHD models of active region loops are presented, and the progress towards more realistic 3D MHD models of active regions. In particular the effects of impulsive events on the excitation of active region loop oscillations, and the generation, propagations and reflection of EIT waves are shown. It is shown how 3D MHD models together with 3D EUV observations can be used as a diagnostic tool for active region loop physical parameters, and to advance the science of the sources of solar coronal activity. |
| File Size | 2091403 |
| Page Count | 13 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20050041720 |
| Archival Resource Key | ark:/13960/t3tt9kd7j |
| Language | English |
| Publisher Date | 2004-12-02 |
| Access Restriction | Open |
| Subject Keyword | Solar Physics Solar Activity Solar Corona Magnetohydrodynamics Coronal Loops Extreme Ultraviolet Radiation Three Dimensional Models Ultraviolet Astronomy Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
