Fine structure observation in a solar prominence
| Autor: | Jean-Claude Vial, Philippe Lemaire, D. Samain |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Physics
Atmospheric Science business.industry Aerospace Engineering Resonance Astronomy and Astrophysics Solar physics medicine.disease_cause Solar prominence Spectral line Preliminary analysis Geophysics Optics Space and Planetary Science medicine General Earth and Planetary Sciences Spectral resolution business Spectrograph Ultraviolet |
| Zdroj: | Advances in Space Research. 10:191-194 |
| ISSN: | 0273-1177 |
| Popis: | The high resolution balloon spectrograph (RASOLBA) has obtained ultraviolet prominence spectra during its September 19th, 1986, flight. The high resolution spectra (one arcsecond along the 30 arcseconds spectrograph slit length, and 0.0015 nm spectral resolution within the 20 nm wavelength band) have been recorded on film. The wavelength band was centered on the Mgll h and k (279.6 nm and 280.3 nm) resonance doublet lines inside the cross-dispersion echelle spectrograph. The analysis of the prominence spectra shows evidence of sheared velocities (up to 20 km/s) which very within few arcseconds with the distance above the limb. This shear may appear inside magnetic loops confining the prominence material. We present the observations and a preliminary analysis of the data. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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