Formation of MgII lines in solar prominences
Abstract
Solar prominences have been observed in MgII h and k lines, both from space (OSO-8) or from stratospheric balloons. Non-LTE modeling of these resonance lines was then performed and the results have been compared to available observations. We briefly review this past effort and present new transfer computations which take into account all details of the MgII line formation under realistic prominence conditions. We estimate the role of MgII lines in radiation cooling of prominence plasmas and show how they affect the radiative relaxation in these structures. Finally, we also demonstrate the diagnostic capabilities of these lines useful for thermodynamic and velocity measurements.
- Publication:
-
SDO-4: Dynamics and Energetics of the Coupled Solar Atmosphere. The Synergy Between State-of-the-Art Observations and Numerical Simulations
- Pub Date:
- March 2012
- Bibcode:
- 2012decs.confE.108H
- Keywords:
-
- SDO;
- SDO-4;
- SDO 4;
- SDO Workshop;
- SDO-4/IRIS/Hinode Workshop;
- Solar Dynamic Observatory