Waves in the Solar Chromosphere using FISS and SDO
Abstract
Waves in the solar atmosphere are believed to play a crucial role in heating the chromosphere and corona. To explore the characteristic properties of waves in different chromospheric features, e.g., sunspot, plages, etc., we analyzed the high resolution observational data provided by the Fast Imaging Solar Spectrometer (FISS) and Solar Dynamic Observatory (SDO). The high spatial and temporal resolution multi-wavelength observations provided by these instruments enable us to sample the chromosphere at different heights. The spectral data provided by the FISS are used to derive physical parameters, viz., temperature, Doppler velocity, etc., which help us to understand the wave excitation mechanism in different chromospheric features. We have studied the running penumbral waves by constructing Doppler images from the spectral observations in different wavelength bands of H-alpha and Ca II obtained from the FISS. Details of our findings will be presented in the paper.
- Publication:
-
39th COSPAR Scientific Assembly
- Pub Date:
- July 2012
- Bibcode:
- 2012cosp...39.1204A