Abstract
We observed solar prominences with the Fast Imaging Solar Spectrograph (FISS) at the Big Bear Solar Observatory on 30 June 2010 and 15 August 2011. To determine the temperature of the prominence material, we applied a nonlinear least-squares fitting of the radiative transfer model. From the Doppler broadening of the Hα and Ca ii lines, we determined the temperature and nonthermal velocity separately. The ranges of temperature and nonthermal velocity were 4000 – 20 000 K and 4 – 11 km s−1. We also found that the temperature varied much from point to point within one prominence.
Original language | English (US) |
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Title of host publication | Initial Results from the Fast Imaging Solar Spectrograph |
Publisher | Springer International Publishing |
Pages | 105-116 |
Number of pages | 12 |
ISBN (Electronic) | 9783319121239 |
ISBN (Print) | 9783319121222 |
DOIs | |
State | Published - Jan 1 2015 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy
- General Chemistry
Keywords
- Broadening
- Chromosphere
- Chromospheric
- Heating
- Prominences
- Quiescent
- Quiet
- Spectral line