Sunspot Modeling: From Simplified Models to Radiative MHD Simulations
We review our current understanding of sunspots from the scales of their fine structure to their large scale (global) structure including the processes of their formation and decay. Recently, sunspot models have undergone a dramatic change. In the past, several aspects of sunspot structure have been...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Springer
2011-09-01
|
| Series: | Living Reviews in Solar Physics |
| Subjects: | |
| Online Access: | http://www.livingreviews.org/lrsp-2011-3 |
| _version_ | 1797766697183084544 |
|---|---|
| author | Rolf Schlichenmaier Matthias Rempel |
| author_facet | Rolf Schlichenmaier Matthias Rempel |
| author_sort | Rolf Schlichenmaier |
| collection | DOAJ |
| description | We review our current understanding of sunspots from the scales of their fine structure to their large scale (global) structure including the processes of their formation and decay. Recently, sunspot models have undergone a dramatic change. In the past, several aspects of sunspot structure have been addressed by static MHD models with parametrized energy transport. Models of sunspot fine structure have been relying heavily on strong assumptions about flow and field geometry (e.g., flux-tubes, "gaps", convective rolls), which were motivated in part by the observed filamentary structure of penumbrae or the necessity of explaining the substantial energy transport required to maintain the penumbral brightness. However, none of these models could self-consistently explain all aspects of penumbral structure (energy transport, filamentation, Evershed flow). In recent years, 3D radiative MHD simulations have been advanced dramatically to the point at which models of complete sunspots with sufficient resolution to capture sunspot fine structure are feasible. Here overturning convection is the central element responsible for energy transport, filamentation leading to fine-structure and the driving of strong outflows. On the larger scale these models are also in the progress of addressing the subsurface structure of sunspots as well as sunspot formation. With this shift in modeling capabilities and the recent advances in high resolution observations, the future research will be guided by comparing observation and theory. |
| first_indexed | 2024-03-12T20:28:56Z |
| format | Article |
| id | doaj.art-09bf01032b69498493dcc64be81c7232 |
| institution | Directory Open Access Journal |
| issn | 1614-4961 |
| language | English |
| last_indexed | 2024-03-12T20:28:56Z |
| publishDate | 2011-09-01 |
| publisher | Springer |
| record_format | Article |
| series | Living Reviews in Solar Physics |
| spelling | doaj.art-09bf01032b69498493dcc64be81c72322023-08-02T00:13:55ZengSpringerLiving Reviews in Solar Physics1614-49612011-09-0183Sunspot Modeling: From Simplified Models to Radiative MHD SimulationsRolf SchlichenmaierMatthias RempelWe review our current understanding of sunspots from the scales of their fine structure to their large scale (global) structure including the processes of their formation and decay. Recently, sunspot models have undergone a dramatic change. In the past, several aspects of sunspot structure have been addressed by static MHD models with parametrized energy transport. Models of sunspot fine structure have been relying heavily on strong assumptions about flow and field geometry (e.g., flux-tubes, "gaps", convective rolls), which were motivated in part by the observed filamentary structure of penumbrae or the necessity of explaining the substantial energy transport required to maintain the penumbral brightness. However, none of these models could self-consistently explain all aspects of penumbral structure (energy transport, filamentation, Evershed flow). In recent years, 3D radiative MHD simulations have been advanced dramatically to the point at which models of complete sunspots with sufficient resolution to capture sunspot fine structure are feasible. Here overturning convection is the central element responsible for energy transport, filamentation leading to fine-structure and the driving of strong outflows. On the larger scale these models are also in the progress of addressing the subsurface structure of sunspots as well as sunspot formation. With this shift in modeling capabilities and the recent advances in high resolution observations, the future research will be guided by comparing observation and theory.http://www.livingreviews.org/lrsp-2011-3SunspotsMagnetohydrodynamics (MHD) |
| spellingShingle | Rolf Schlichenmaier Matthias Rempel Sunspot Modeling: From Simplified Models to Radiative MHD Simulations Living Reviews in Solar Physics Sunspots Magnetohydrodynamics (MHD) |
| title | Sunspot Modeling: From Simplified Models to Radiative MHD Simulations |
| title_full | Sunspot Modeling: From Simplified Models to Radiative MHD Simulations |
| title_fullStr | Sunspot Modeling: From Simplified Models to Radiative MHD Simulations |
| title_full_unstemmed | Sunspot Modeling: From Simplified Models to Radiative MHD Simulations |
| title_short | Sunspot Modeling: From Simplified Models to Radiative MHD Simulations |
| title_sort | sunspot modeling from simplified models to radiative mhd simulations |
| topic | Sunspots Magnetohydrodynamics (MHD) |
| url | http://www.livingreviews.org/lrsp-2011-3 |
| work_keys_str_mv | AT rolfschlichenmaier sunspotmodelingfromsimplifiedmodelstoradiativemhdsimulations AT matthiasrempel sunspotmodelingfromsimplifiedmodelstoradiativemhdsimulations |